WO2012108469A1 - Semiconductor device and semiconductor device manufacturing method - Google Patents
Semiconductor device and semiconductor device manufacturing methodDownload PDFInfo
- Publication number
- WO2012108469A1 WO2012108469A1PCT/JP2012/052870JP2012052870WWO2012108469A1WO 2012108469 A1WO2012108469 A1WO 2012108469A1JP 2012052870 WJP2012052870 WJP 2012052870WWO 2012108469 A1WO2012108469 A1WO 2012108469A1
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- Prior art keywords
- semiconductor chip
- terminal
- semiconductor device
- terminals
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Definitions
- the present inventionrelates to a semiconductor device and a method for manufacturing the semiconductor device.
- FIG. 29shows a cross-sectional view of an example of a QFN type semiconductor device (see Patent Document 1).
- a semiconductor device X shown in FIG. 29includes a resin case 91, base leads 92, a semiconductor chip 93, lead terminals 94, and connection wires 95.
- the semiconductor chip 93is fixed to the base lead 92 and is connected to the lead terminal 94 via the connection wire 95.
- Such a semiconductor device Xis manufactured using a lead frame.
- the lead frameis manufactured by forming a metal plate having a thickness of about 0.2 mm into a desired pattern by punching or etching with a precision press.
- the semiconductor chip 93is installed on the base lead 92, the semiconductor chip 93 and the lead terminal 94 are connected by the connection wire 95, and then the lead frame is attached by the resin case 91. cover. Thereafter, unnecessary lead frame portions are cut and removed.
- One way to reduce the sizeis to reduce the thickness of the semiconductor device X.
- the thickness of the base lead 92 and the lead terminal 94is a disadvantageous factor.
- the thickness of the terminalis about 20 ⁇ m, which may be easily removed from the resin case.
- securing the pull-out strength of the terminalis an issue.
- the present inventionhas been conceived under the circumstances described above, and it is an object of the present invention to provide a method of manufacturing a semiconductor device and a semiconductor device that can be more easily miniaturized.
- a semiconductor device provided by the first aspect of the present inventionis a semiconductor device comprising a semiconductor chip, a terminal connected to the semiconductor chip, and a sealing resin covering the semiconductor chip and the terminal.
- the sealing resinis formed to expose one surface in the thickness direction of the terminal, and the terminal is formed with an opening filled with the sealing resin. To do.
- the openingis formed in a hole shape penetrating the terminal in the thickness direction.
- the openinghas a shape recessed in a direction orthogonal to the thickness direction when viewed in the thickness direction.
- a wire for connecting the semiconductor chip and the terminalis provided, the terminal has a pad portion to which the wire is connected, and the pad portion is It arrange
- the terminalextends long in a first direction orthogonal to the thickness direction, and as the terminal moves away from the semiconductor chip in the first direction, the thickness direction and the first direction are increased.
- the width in the second direction orthogonal to the directionis narrowed.
- a support member that supports one surface of the semiconductor chip in the thickness directionis provided, and one surface of the support member in the thickness direction is exposed from the sealing resin. ing.
- the support membercontains silver.
- the terminalincludes a plurality of metal layers.
- one surface of the semiconductor chip in the thickness directionis bonded to the support member, and an additional semiconductor chip is installed on the other surface of the semiconductor chip in the thickness direction. Has been.
- an additional terminalthat is connected to the additional semiconductor chip and is exposed from the sealing resin on one surface in the thickness direction is provided.
- the additional terminalis provided with an additional opening filled with the sealing resin.
- the additional openingis formed in a hole shape penetrating the terminal in the thickness direction.
- the additional openinghas a shape recessed in a direction perpendicular to the thickness direction when viewed in the thickness direction.
- an additional wire for connecting the additional semiconductor chip and the additional terminalis provided, and the additional terminal has an additional pad portion to which the additional wire is connected.
- the pad portionis disposed at a position farther from the semiconductor chip in a direction perpendicular to the thickness direction than the additional opening portion.
- a fixing member for fixing the additional semiconductor chip to the semiconductor chipis provided, and the fixing member is a DAF tape.
- a method of manufacturing a semiconductor device provided by the second aspect of the present inventionincludes a step of forming a terminal on a base, a step of installing a semiconductor chip on the base, and sealing the terminal and the semiconductor chip with a resin. And a step of removing the base, wherein the step of forming the terminal exposes the base to the terminal in the thickness direction of the base. A step of forming an opening to be formed.
- the step of forming a terminal on the baseincludes a step of subjecting the base to electroless plating.
- the openingis formed in a hole shape penetrating in the thickness direction.
- the openingis formed in a shape that is recessed in a direction perpendicular to the thickness direction when viewed in the thickness direction.
- the methodincludes a step of connecting the terminal and the semiconductor chip with a wire, and the terminal includes a pad portion to which the wire is connected, and the pad portion is more than the opening portion. It arrange
- the step of installing the semiconductor chip on the baseincludes the step of adhering one surface in the thickness direction of the semiconductor chip to the base via an adhesive member, and the terminal and the above In the step of connecting the semiconductor chip to the wire, the wire is connected to an electrode terminal provided on the other surface in the thickness direction of the semiconductor chip.
- the adhesive memberis a silver paste.
- a step of forming an additional terminal on the basea step of installing an additional semiconductor chip on the other surface in the thickness direction of the semiconductor chip, the additional semiconductor chip, and the additional Connecting the terminal with a wire, and the step of forming the additional terminal forms an additional opening that exposes the base in the thickness direction of the base in the additional terminal.
- the process to dois included.
- the semiconductor device provided by the third aspect of the present inventionincludes a plurality of terminals, a first semiconductor chip, a second semiconductor chip installed on the first semiconductor chip, and the first semiconductor chip. , The second semiconductor chip, and a sealing resin covering the plurality of terminals, wherein the plurality of terminals are connected to the first semiconductor chip and the second terminal. And a second terminal connected to the semiconductor chip, wherein one surface in the thickness direction of the plurality of terminals is exposed from the sealing resin.
- a support member that supports one surface of the first semiconductor chip in the thickness directionis provided, and the one surface of the support member in the thickness direction is the sealing resin. Is exposed from.
- the support memberincludes silver.
- the first semiconductor chiphas a first electrode terminal on the other surface in the thickness direction, and the first electrode terminal, the first terminal, The 1st wire which connects is provided.
- the first terminalhas an opening filled with the sealing resin.
- the first terminalis disposed at a position overlapping the first semiconductor chip in the thickness direction view, and the first semiconductor chip is in the thickness direction.
- the first electrode terminalis provided on one of the surfaces, and a conductive connection member for connecting the first electrode terminal and the first terminal is provided.
- the conductive connecting memberis a solder bump.
- one surface in the thickness direction of the second semiconductor chipis fixed to the first semiconductor chip, and the second semiconductor chip is in the thickness direction.
- a second electrode terminalis provided on the other surface, and a second wire for connecting the second electrode terminal and the second terminal is provided.
- a fixing member for joining the second semiconductor chip and the first semiconductor chipis provided.
- the fixing memberis a DAF tape.
- the second terminalhas an opening filled with the sealing resin.
- each terminalis composed of a plurality of metal layers.
- the method for manufacturing a semiconductor deviceincludes a step of forming a plurality of terminals on a base, a step of installing a first semiconductor chip on the base, and the first semiconductor A step of placing a second semiconductor chip on the chip, a step of sealing the first semiconductor chip, the second semiconductor chip and the plurality of terminals with a resin, and a step of removing the base. It is characterized by having.
- the step of forming a plurality of terminals on the baseincludes a step of subjecting the base to electroless plating.
- the first semiconductor chiphas a first electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals, and the first semiconductor chip is mounted on the base.
- the step of installingincludes a step of adhering a surface closer to the base in the thickness direction of the first semiconductor chip to the base via an adhesive member, the first electrode terminal, and the plurality of Connecting to any one of the terminals with a first wire
- the adhesive memberis a silver paste.
- the step of forming the plurality of terminals on the baseincludes a step of forming openings that expose the base in the thickness direction of the base in the plurality of terminals.
- the first semiconductor chiphas a first electrode terminal on a surface closer to the base in the thickness direction of the plurality of terminals, and the first base is provided on the base.
- the step of installing the semiconductor chipincludes a step of connecting any one of the first electrode terminal and the plurality of terminals with a conductive connecting member.
- the conductive adhesive memberis a solder bump.
- the plurality of terminalsare formed in a lattice shape.
- the second semiconductor chiphas a second electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals, and the second electrode terminal and the second semiconductor chip
- the methodincludes a step of connecting any one of a plurality of terminals with a second wire.
- the surface of the first semiconductor chip farther from the base in the thickness direction of the plurality of terminalsA surface closer to the base of the second semiconductor chip is joined with a fixing member.
- the fixing memberis a DAF tape.
- a semiconductor device provided by a fifth aspect of the present inventionincludes a plurality of terminals, a first semiconductor chip, a second semiconductor chip installed on the first semiconductor chip, and the second semiconductor chip. And a sealing resin that covers the first semiconductor chip, the second semiconductor chip, the third semiconductor chip, and the plurality of terminals.
- the plurality of terminalsinclude a first terminal connected to the first semiconductor chip, a second terminal connected to the second semiconductor chip, and a third terminal connected to the third semiconductor chip. And one surface in the thickness direction of the plurality of terminals is exposed from the sealing resin.
- the first terminalis disposed at a position overlapping the first semiconductor chip in the thickness direction view, and the first semiconductor chip is arranged in one direction in the thickness direction.
- the first electrode terminalis provided on the surface, and a conductive connection member for connecting the first electrode terminal and the first terminal is provided.
- the conductive connecting memberis a solder bump.
- the plurality of terminalsare arranged in a lattice shape in the thickness direction view.
- a support member that supports one surface of the first semiconductor chip in the thickness directionis provided, and the one surface of the support member in the thickness direction is the sealing resin. Is exposed from.
- the support memberincludes silver.
- the first semiconductor chiphas a first electrode terminal on the other surface in the thickness direction, and the first electrode terminal and the first electrode A first wire for connecting the terminal is provided.
- the first terminalhas an opening filled with the sealing resin.
- one surface in the thickness direction of the second semiconductor chipis fixed to the first semiconductor chip, and the second semiconductor chip is in the thickness direction.
- a second electrode terminalis provided on the other surface, and a second wire for connecting the second electrode terminal and the second terminal is provided.
- the second terminalhas an opening filled with the sealing resin.
- a first fixing member for joining the second semiconductor chip and the first semiconductor chipis provided.
- the first fixing memberis a DAF tape.
- one surface of the third semiconductor chip in the thickness directionis fixed to the second semiconductor chip, and the third semiconductor chip is fixed in the thickness direction.
- a third electrode terminalis provided on the other surface, and a third wire for connecting the third electrode terminal and the third terminal is provided.
- the third terminalhas an opening filled with the sealing resin.
- a second fixing memberthat joins the third semiconductor chip and the second semiconductor chip is provided.
- the second fixing memberis a DAF tape.
- each terminalis composed of a plurality of metal layers.
- the method for manufacturing a semiconductor deviceincludes a step of forming a plurality of terminals on a base, a step of installing a first semiconductor chip on the base, and the first semiconductor Installing a second semiconductor chip on the chip, installing a third semiconductor chip on the second semiconductor chip, the first semiconductor chip, the second semiconductor chip, and the third semiconductor.
- the methodincludes a step of sealing the chip and the plurality of terminals with a resin, and a step of removing the base.
- the step of forming a plurality of terminals on the baseincludes a step of subjecting the base to electroless plating.
- the first semiconductor chiphas a first electrode terminal on a surface closer to the base in the thickness direction of the plurality of terminals, and the first semiconductor chip is installed on the base.
- the step of performingincludes a step of connecting any one of the first electrode terminal and the plurality of terminals with a conductive connecting member.
- the conductive connecting memberis a solder bump.
- the plurality of terminalsare formed in a lattice shape.
- the first semiconductor chiphas a first electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals, and the first semiconductor chip is installed on the base.
- the adhesive memberis a silver paste.
- the second semiconductor chiphas a second electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals, and the second electrode terminal and the plurality of terminals.
- the third semiconductor chiphas a third electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals, and the third electrode terminal and the plurality of terminals. A step of connecting any one of the above with a third wire.
- the surface of the first semiconductor chip farther from the base in the thickness direction of the plurality of terminals, and the second The surface of the semiconductor chip closer to the baseis joined by the first fixing member.
- the first fixing memberis a DAF tape.
- the surface of the second semiconductor chip farther from the base in the thickness direction of the plurality of terminals, and the third The surface of the semiconductor chip closer to the baseis joined by a second fixing member.
- the second fixing memberis a DAF tape.
- FIG. 1is a plan view showing a semiconductor device according to a first embodiment of the present invention.
- FIG. 2is a cross-sectional view taken along the line II-II in FIG.
- FIG. 2is a bottom view of the semiconductor device shown in FIG. 1.
- FIG. 7is a plan view of a principal portion showing a state where terminals are formed on a base in the example of the method for manufacturing the semiconductor device of FIG. 1.
- FIG. 7is a plan view of relevant parts showing a state where a semiconductor chip is mounted in an example of the method for manufacturing the semiconductor device of FIG. 1.
- FIG. 7is a plan view of relevant parts showing a state where a semiconductor chip and a terminal are connected by a wire in the example of the method for manufacturing the semiconductor device of FIG. 1;
- FIG. 3is a cross-sectional view of a principal part showing a state where a sealing resin is formed in an example of the method for manufacturing the semiconductor device of FIG. 1.
- FIG. 3is a cross-sectional view of a principal part showing a state where a base is removed in an example of the method for manufacturing the semiconductor device of FIG. 1. It is a bottom view which shows the semiconductor device based on 2nd Embodiment of this invention. It is a bottom view which shows the semiconductor device based on 3rd Embodiment of this invention. It is a top view which shows the semiconductor device based on 4th Embodiment of this invention.
- FIG. 12is a cross-sectional view taken along line XII-XII in FIG.
- FIG. 12is an essential part plan view showing a state in which terminals are formed on a base in the example of the method for manufacturing the semiconductor device of FIG.
- FIG. 12is a plan view of relevant parts showing a state where a semiconductor chip is mounted in an example of the method for manufacturing the semiconductor device of FIG. 11;
- FIG. 12is a plan view of relevant parts showing a state where an additional semiconductor chip is mounted in the example of the method for manufacturing the semiconductor device of FIG. 11.
- 12is an essential part plan view showing a state in which a semiconductor chip and a terminal are connected by a wire in the example of the method for manufacturing the semiconductor device of FIG. FIG.
- FIG. 12is an essential part plan view showing a state where an additional semiconductor chip and a terminal are connected by an additional wire in the example of the method for manufacturing the semiconductor device of FIG. 11; It is a top view which shows the semiconductor device based on 5th Embodiment of this invention.
- FIG. 19is a cross-sectional view taken along line XIX-XIX in FIG.
- FIG. 19is a bottom view of the semiconductor device shown in FIG. 18.
- FIG. 19is a plan view of a principal portion showing a state in which terminals are formed on a base in the example of the method for manufacturing the semiconductor device of FIG. 18.
- FIG. 19is an essential part plan view showing a state where a first semiconductor chip is mounted in an example of the method for manufacturing the semiconductor device in FIG. 18; FIG.
- FIG. 23is a cross-sectional view taken along line XXIII-XXIII in FIG.
- FIG. 19is an essential part cross-sectional view showing a state in which a second semiconductor chip is mounted in an example of the method for manufacturing the semiconductor device of FIG. 18;
- FIG. 19is an essential part cross-sectional view showing a state where a third semiconductor chip is mounted in an example of the method for manufacturing the semiconductor device of FIG. 18;
- FIG. 19is a substantial part plan view showing a state in which the second and third semiconductor chips and terminals are connected by wires in the example of the method for manufacturing the semiconductor device of FIG. 18;
- Itis a top view which shows the semiconductor device based on 6th Embodiment of this invention.
- FIG. 28is a sectional view taken along line XXVIII-XXVIII in FIG. 27. It is sectional drawing which shows an example of the conventional semiconductor device.
- the semiconductor device A1 of this embodimentincludes a sealing resin 1, a semiconductor chip 2, a support member 3, ten terminals 4, and ten wires 5.
- the sealing resin 1is, for example, black and cannot be seen from the outside, but for the sake of convenience of explanation, FIG. 1 shows the inside of the sealing resin 1.
- the x, y, and z directions used in the following descriptionare directions orthogonal to each other, and the z direction is the thickness direction of the sealing resin 1, the semiconductor chip 2, the support member 3, and the terminal 4.
- the lower side in FIG. 2 in the z directionis the bottom side, and the upper side in FIG.
- the sealing resin 1completely covers the semiconductor chip 2 and each wire 5, and covers the support member 3 and each terminal 4 so that the bottom surface 3a of the support member 3 and the bottom surface 4a of each terminal 4 are exposed.
- the sealing resin 1is made of, for example, an epoxy resin and is formed in a rectangular parallelepiped shape that extends long in the x direction shown in FIG.
- the x-direction dimension of the sealing resin 1is 2.10 mm
- the y-direction dimensionis 1.60 mm
- the z-direction dimensionis 0.35 to 0.4 mm.
- the semiconductor chip 2is made of a semiconductor material such as Si, and a fine circuit is formed inside.
- the semiconductor chip 2has a bottom surface 2a and a surface 2b that are opposite to each other in the z direction, and the bottom surface 2a is located below the surface 2b in FIG.
- the bottom surface 2 a of the semiconductor chip 2is fixed to the support member 3.
- Ten electrode terminals 201are provided on the surface 2 b of the semiconductor chip 2.
- the ten electrode terminals 201are arranged in a rectangular shape when viewed in the z direction. Each electrode terminal 201 is connected to a fine circuit in the semiconductor chip 2.
- the semiconductor chip 2is used by being incorporated in an electronic circuit, for example. At that time, the semiconductor chip 2 exhibits its function by connecting each electrode terminal 201 to the wiring in the electronic circuit.
- the number of electrode terminals 201can be changed as appropriate according to the function of the semiconductor chip 2.
- the support member 3is made of, for example, silver and has a substantially rectangular shape in the z direction as shown in FIGS. 1 and 3 and is arranged at the center in the x and y directions of the semiconductor device A1. Furthermore, as shown in FIG. 2, the bottom surface 3 a of the support member 3 is in the same position as the bottom surface 1 a of the sealing resin 1 in the z direction.
- the ten terminals 4are arranged in a rectangular shape surrounding the semiconductor chip 2 as shown in FIG.
- Each terminal 4is formed in a rectangular shape as viewed in the z direction, and is connected to each electrode terminal 201 by a gold wire 5.
- the terminals 4are separated from each other by about 0.50 mm, for example.
- the pair of terminals 4 arranged at the center in the y directionare arranged so as to extend long in the x direction, and the other terminals 4 are arranged so as to extend long in the y direction. Yes.
- the length of each terminal 4 in the longitudinal directionis, for example, 0.35 mm. Note that the number of terminals 4 corresponds to the number of electrode terminals 201 of the semiconductor chip 2 and can be changed as appropriate according to the function of the semiconductor chip 2.
- each terminal 4is composed of a plurality of metal layers laminated by, for example, electroless plating.
- Preferred examples of the plurality of metal layers constituting each terminal 4are a gold layer, a nickel layer, and a palladium layer.
- a gold layeris disposed on the bottom surface 4a side
- a nickel layeris disposed in the center
- a palladium layeris disposed on the surface 4b side.
- Such a terminal 4has a thickness of, for example, 0.015 mm.
- Each terminal 4has an opening 401 formed therein.
- the opening 401has a circular shape in the z direction and is formed so as to penetrate in the z direction.
- Each opening 401is filled with the sealing resin 1.
- the diameter of the opening 401is about 0.06 to 0.07 mm.
- the opening 401 in each terminal 4is formed near the end closer to the semiconductor chip 2 in the longitudinal direction of each terminal 4.
- Each terminal 4includes a pad portion 402 to which the wire 5 is connected.
- the pad portion 402is a region including an end portion far from the semiconductor chip 2 in the longitudinal direction of each terminal 4.
- the length of each terminal 4 in each pad portion 402 in the longitudinal directionis, for example, 0.21 mm.
- the length of the pad portion 402is selected to be a desirable length for properly arranging the wires 5.
- the opening 401 described aboveis disposed at a position closer to the semiconductor chip 2 in the longitudinal direction of each terminal 4 than the pad portion 402 so as not to disturb the arrangement of the wires 5.
- the pad portion 402is set at a relatively far position from the semiconductor chip 2 because the wire 5 is easier to install.
- the base 6is used for manufacturing the semiconductor device A1.
- the base 6is a copper plate having a thickness in the z direction of about 0.125 mm, for example.
- the base 6has a rectangular shape including a large number of semiconductor devices A1 when viewed in the z direction.
- the base 6is prepared, and the process of forming the terminals 4 on the surface of the base 6 is performed.
- a metal plating layeris formed on the entire surface of the base 6 by, for example, electroless plating. Thereafter, the metal plating layer is formed into a desired shape by etching. By doing in this way, many terminals 4 can be formed on the base 6, as shown in FIG.
- FIG. 5shows a state where the semiconductor chip 2 is installed on the base 6.
- a step of attaching an adhesive material made of silver paste to the bottom surface of the semiconductor chip 2is performed.
- a step of installing the semiconductor chip 2 in a region surrounded by the terminals 4is performed.
- the support member 3is obtained by curing the adhesive material.
- FIG. 6shows a state after the wire 5 is connected.
- each semiconductor chip 2is provided with ten electrode terminals 201.
- the wire 5is connected between each electrode terminal 201 and the pad portion 402 of each terminal 4. This step can be performed, for example, using a commercially available wire bonding capillary.
- FIG. 7shows a state after the sealing resin 1 is formed.
- This stepcan be performed by, for example, a transfer mold method.
- the base 6is installed in a mold, and a process of pouring liquefied epoxy resin into the mold is performed. At this time, the liquefied epoxy resin also flows into the opening 401.
- FIG. 8shows a state after the base 6 is removed.
- the step of removing the base 6is performed by etching the base 6 from the bottom surface side.
- the etching treatmentmay be performed by mechanical polishing or may be performed using a liquid agent that melts copper.
- the bottom surface 3 a of the support member 3 and the bottom surface 4 a of each terminal 4are exposed to the bottom surface 1 a side of the sealing resin 1.
- the sealing resin 1is the same size as the base 6 when viewed in the z direction.
- the semiconductor device A1 shown in FIG. 1can be obtained.
- each terminal 4is formed on the surface of the base 6 by plating, the thickness of each terminal 4 is thinner than the thickness of the terminal 94 of the semiconductor device X shown in the conventional description.
- the manufacturing method described abovehas a preferable configuration for reducing the thickness.
- each terminal 4is provided with an opening 401, and the opening 401 is filled with the sealing resin 1, and each terminal 4 and the sealing resin are compared with the case where the opening 401 is not provided.
- the area in contact with 1is large. For this reason, the frictional force acting between each terminal 4 and the sealing resin 1 is large, and each terminal 4 is difficult to drop off from the sealing resin 1. Therefore, according to the configuration of the semiconductor device A1, it is possible to solve the problem caused by making each terminal 4 thinner and to improve the reliability.
- the bottom surface 3 a of the support member 3 on which the semiconductor chip 2 is mountedis exposed from the sealing resin 1. Furthermore, the support member 3 is made of silver and has excellent thermal conductivity. Accordingly, heat generated when the semiconductor chip 2 is driven is quickly released to the outside of the semiconductor device A1 through the support member 3.
- FIG. 9shows a semiconductor device according to the second embodiment of the present invention.
- the shape of the opening 401 of each terminal 4is different from that of the semiconductor device A1, and other configurations are the same as those of the semiconductor device A1.
- the opening 401 in the present embodimenthas a rectangular shape when viewed in the z direction, and is formed so as to be recessed in the short direction from the long side of each terminal 4.
- the center terminal 4 in the y directionhas openings 401 on both sides in the y direction. This is because the center terminal 4 is easier to secure the width than the other terminals 4. If a sufficient width can be secured, the openings 401 may be provided on both sides of the other terminals 4.
- FIG. 10shows a semiconductor device according to the third embodiment of the present invention.
- the shape of each terminal 4 and the opening 401is different from that of the semiconductor device A1, and other configurations are the same as those of the semiconductor device A1.
- the shape of the opening 401 shown in FIG. 10is an example.
- the opening 401 in the present embodimentmay be any shape that is recessed inward from the edge of each terminal 4 and may have any shape as viewed in the z direction. Further, in the example shown in FIG. 10, the opening 401 is recessed in the longitudinal direction from the short side of each terminal 4, but may have a shape recessed in the lateral direction from the long side.
- each terminal 4 in the present embodimenthas a shape in which the width in the short direction becomes shorter as the distance from the semiconductor chip 2 increases in the longitudinal direction.
- Each opening 401is formed so as to be recessed in the longitudinal direction from an end edge closer to the semiconductor chip 2 in the longitudinal direction of each terminal 4.
- the opening 401can be made relatively large. This is a preferable configuration for increasing the contact area between each terminal 4 and the sealing resin 1.
- the semiconductor device A4 of this embodimentincludes a sealing resin 1, two semiconductor chips 21, 22, a support member 31, a fixing member 32, 32 terminals 41, 36 terminals 42, 32 wires 51, and 36.
- a wire 52is provided.
- the sealing resin 1completely covers the semiconductor chips 21 and 22, the fixing member 32 and the wires 51 and 52, and supports the bottom surface 31 a of the support member 31 and the bottom surfaces 41 a and 42 a of the terminals 41 and 42. 31 and the terminals 41 and 42 are covered.
- the sealing resin 1is made of, for example, an epoxy resin and is formed in a square shape as viewed in the z direction.
- the semiconductor chip 21is made of a semiconductor material such as Si, and a fine circuit is formed inside.
- the semiconductor chip 21has a bottom surface 21a and a surface 21b that face each other in the z direction, and the bottom surface 21a is located below the surface 21b in FIG.
- the bottom surface 21 a of the semiconductor chip 21is fixed to the support member 31.
- 32 electrode terminals 211are provided on the surface 21 b of the semiconductor chip 21.
- the 32 electrode terminals 211are arranged in a rectangular shape when viewed in the z direction. Each electrode terminal 211 is connected to a fine circuit in the semiconductor chip 21.
- the semiconductor chip 21is used by being incorporated in an electronic circuit, for example. At that time, the semiconductor chip 21 exhibits its function by connecting each electrode terminal 211 to the wiring in the electronic circuit.
- the number of electrode terminals 211can be changed as appropriate according to the function of the semiconductor chip 21.
- the support member 31is made of, for example, silver paste. As shown in FIG. 11, the support member 31 has a substantially rectangular shape when viewed in the z direction, and is disposed at the center in the x and y directions of the semiconductor device A4. Furthermore, as shown in FIG. 12, the bottom surface 31 a of the support member 31 is in the same position as the bottom surface 1 a of the sealing resin 1 in the z direction.
- the semiconductor chip 22is made of a semiconductor material such as Si, and a fine circuit is formed inside.
- the semiconductor chip 22has a bottom surface 22a and a surface 22b that are opposite to each other in the z direction, and the bottom surface 22a is located below the surface 22b in FIG.
- the semiconductor chip 22is smaller in size as viewed in the z direction than the semiconductor chip 21.
- the bottom surface 22 a of the semiconductor chip 22is fixed to the surface 21 b of the semiconductor chip 21 through a fixing member 32.
- 36 electrode terminals 221are provided on the surface 22 b of the semiconductor chip 22.
- the 36 electrode terminals 221are arranged in a rectangular shape when viewed in the z direction. Each electrode terminal 221 is connected to a fine circuit in the semiconductor chip 22.
- the semiconductor chip 22is used together with the semiconductor chip 21 in an electronic circuit. At that time, the semiconductor chip 22 exhibits its function by connecting each electrode terminal 221 to the wiring in the electronic circuit. The number of electrode terminals 221 can be changed as appropriate according to the function of the semiconductor chip 22.
- the fixing member 32is, for example, a die attach film tape (hereinafter referred to as a DAF tape). As shown in FIG. 11, the fixing member 32 has a substantially rectangular shape as viewed in the z direction, and is disposed inside a rectangular frame formed by the 32 electrode terminals 211.
- a DAF tapedie attach film tape
- the 32 terminals 41are arranged in a frame shape surrounding the semiconductor chips 21 and 22, as shown in FIG.
- the 32 terminals 41are divided into four columns of eight terminals 41. In two of the four columns, the eight terminals 41 are arranged along the x direction, and in the other two columns, they are arranged along the y direction.
- Each terminal 41has a rectangular shape when viewed in the z direction, and the arrangement direction is the short direction of each terminal 41.
- Each terminal 41has an opening 401 and a pad portion 402, like each terminal 4 in the semiconductor device A1 described above.
- Each pad portion 402 of each terminal 41is connected to each electrode terminal 211 by a gold wire 51.
- the number of terminals 41corresponds to the number of electrode terminals 211 of the semiconductor chip 21 and can be changed as appropriate according to the function of the semiconductor chip 21.
- the 36 terminals 42are arranged in a frame shape surrounding a frame formed by 32 terminals 41, as shown in FIG. In the example shown in FIG. 11, the 36 terminals 42 are divided into four columns of nine terminals 42. Nine terminals 42 are arranged along the x direction in two of the four rows, and are arranged along the y direction in the other two rows. Each terminal 42 has a rectangular shape viewed in the z direction, and the arrangement direction is a short direction of each terminal 42. Each terminal 42 is provided with an opening 401 and a pad portion 402 as in the case of each terminal 4 in the semiconductor device A1 described above. Each pad portion 402 of each terminal 42 is connected to each electrode terminal 221 by a gold wire 52.
- the number of terminals 42corresponds to the number of electrode terminals 221 of the semiconductor chip 22 and can be changed as appropriate according to the function of the semiconductor chip 22.
- each of the terminals 41 and 42is composed of a plurality of metal layers in the same manner as the terminal 4 in the semiconductor device A1.
- the thickness of each of such terminals 41 and 42is, for example, 0.015 mm.
- the base 6is used as in the case of the semiconductor device A1.
- FIG. 13shows a state in which the terminals 41 and 42 are formed. This step can be performed by performing an electroless plating process similarly to the case of forming the terminal 4 of the semiconductor device A1, and then forming the opening 401. In this step, a covering member that exposes the terminals 41 and 42 is installed on the base 6.
- FIG. 14shows a state where the semiconductor chip 21 is installed on the base 6.
- a step of attaching an adhesive material made of silver paste to the bottom surface of the semiconductor chip 21is performed.
- the semiconductor chip 21is installed in a region surrounded by the terminals 41.
- the support member 31is formed by curing the adhesive material.
- FIG. 15shows a state where the semiconductor chip 22 is installed on the semiconductor chip 21.
- a step of attaching a DAF tape to the bottom surface of the semiconductor chip 22is performed.
- the semiconductor chip 22is installed in a region surrounded by each electrode terminal 211.
- the DAF tapeis the fixing member 32.
- FIG. 16shows a state after the wire 51 is installed.
- the semiconductor chip 21is provided with 32 electrode terminals 211.
- the wire 51is installed between each electrode terminal 211 and the pad portion 402 of each terminal 41.
- the wire 51can be installed using a commercially available wire bonding capillary, for example.
- FIG. 17shows a state after the wire 52 is connected.
- the semiconductor chip 22is provided with 36 electrode terminals 221.
- each electrode terminal 221 and the pad portion 402 of each terminal 42are connected by a wire 52.
- This stepcan be performed, for example, using a commercially available wire bonding capillary.
- a step of forming the sealing resin 1is performed.
- This stepcan be performed by, for example, a transfer mold method, similarly to the method described in the method for manufacturing the semiconductor device A1.
- a process of removing the base 6is performed. This step is performed by etching the base 6 from the bottom side as in the method described in the method for manufacturing the semiconductor device A1. By removing the sealing resin 1 after removing the base 6, the semiconductor device A4 shown in FIGS. 11 and 12 can be obtained.
- the semiconductor device A4is used by being incorporated in circuit boards of various electronic devices. In order to reduce the size of the circuit board, it is effective to incorporate more semiconductor chips in the same area.
- the semiconductor chip 22is fixed to the surface 21b of the semiconductor chip 21. According to such a configuration, the number of semiconductor chips per unit area can be increased as compared with the case where the two semiconductor chips 21 and 22 are separately resin-sealed and incorporated in an electronic circuit. Therefore, the semiconductor device A4 has a configuration that is useful for reducing the size of the circuit board.
- the semiconductor device A5 of this embodimentincludes a sealing resin 1, three semiconductor chips 23, 24, and 25, nine conductive connection members 33, fixing members 34 and 35, 25 terminals 43, and 16 wires 53. It has.
- the semiconductor device A5is an example of an area array type semiconductor device, and as shown in FIG. 20, 25 terminals 43 are arranged in a lattice pattern in the z direction. Out of the 25 terminals 43, the outer 16 are connected to the semiconductor chips 24 and 25, and the inner 9 are connected to the semiconductor chip 23. In the present embodiment, each terminal 43 is square when viewed in the z direction.
- the sealing resin 1completely covers the semiconductor chips 23, 24, 25, the respective conductive connection members 33, the fixing members 34, 35 and the respective wires 53, and covers the respective terminals 43 so as to expose the bottom surfaces 43 a of the respective terminals 43. ing.
- the sealing resin 1is made of, for example, an epoxy resin and is formed in a square shape as viewed in the z direction.
- the semiconductor chip 23is made of a semiconductor material such as Si, and a fine circuit is formed inside.
- the semiconductor chip 23has a bottom surface 23a and a surface 23b that are opposite to each other in the z direction, and the bottom surface 23a is located below the surface 23b in FIG.
- the semiconductor chip 23has a square shape when viewed in the z direction, and is disposed inside a rectangular frame formed by 16 terminals 43.
- nine electrode terminals 231 arranged in a lattice shape when viewed in the z directionare provided on the bottom surface 23a of the semiconductor chip 23, nine electrode terminals 231 arranged in a lattice shape when viewed in the z direction are provided. Each electrode terminal 231 is connected to a fine circuit in the semiconductor chip 23. The number of electrode terminals 231 can be changed as appropriate according to the function of the semiconductor chip 23.
- the inner nine terminals 43are arranged at positions overlapping the semiconductor chip 23 when viewed in the z direction. More specifically, the nine terminals 43 are arranged to face the nine electrode terminals 231 provided on the bottom surface 23 a of the semiconductor chip 23.
- Each conductive connecting member 33is formed by, for example, a solder bump, and joins each terminal 43 and each electrode terminal 231 as shown in FIG.
- the semiconductor chip 24is made of a semiconductor material such as Si, and a fine circuit is formed inside.
- the semiconductor chip 24has a bottom surface 24a and a surface 24b that are opposite to each other in the z direction, and the bottom surface 24a is located below the surface 24b in FIG. In the example shown in FIG. 18, the semiconductor chip 24 has a smaller square than the semiconductor chip 23 in the z direction.
- the bottom surface 24 a of the semiconductor chip 24is fixed to the surface 23 b of the semiconductor chip 23 via a fixing member 34.
- Eight electrode terminals 241are provided on the surface 24 b of the semiconductor chip 24. The eight electrode terminals 241 are arranged at the peripheral edge of the surface 24b so as to leave a central portion when the semiconductor chip 24 is viewed in the z direction.
- each electrode terminal 241is arranged near both ends and the center of each side of the surface 24b.
- Each electrode terminal 241is connected to a fine circuit in the semiconductor chip 24.
- the number of electrode terminals 241can be changed as appropriate according to the function of the semiconductor chip 24.
- the semiconductor chip 25is made of a semiconductor material such as Si, and a fine circuit is formed inside.
- the semiconductor chip 25has a bottom surface 25a and a surface 25b that are opposite to each other in the z direction, and the bottom surface 25a is located below the surface 25b in FIG. In the example shown in FIG. 18, the semiconductor chip 25 is a square smaller than the semiconductor chip 24 when viewed in the z direction.
- the bottom surface 25 a of the semiconductor chip 25is fixed to the surface 24 b of the semiconductor chip 24 through a fixing member 35.
- Eight electrode terminals 251are provided on the surface 25 b of the semiconductor chip 25. In the example illustrated in FIG.
- the eight electrode terminals 251are arranged at positions that do not overlap the eight electrode terminals 241 when viewed in the x direction or the y direction. Each electrode terminal 251 is connected to a fine circuit in the semiconductor chip 25. The number of electrode terminals 251 can be changed as appropriate according to the function of the semiconductor chip 25.
- the fixing members 34 and 35are, for example, DAF tapes. As shown in FIG. 18, the fixing member 34 is substantially rectangular when viewed in the z direction, and covers most of the surface 23 b of the semiconductor chip 23. As described above, the electrode terminal 231 of the semiconductor chip 23 is provided on the bottom surface 23a. For this reason, it is possible to make the size of the fixing member 34 substantially the same as that of the semiconductor chip 23. This is advantageous when a relatively large size semiconductor chip 24 is installed on the semiconductor chip 23.
- the fixing member 35is installed inside a frame formed by the eight electrode terminals 241.
- each electrode terminal 241, 251is connected to each terminal 43 by a gold wire 53.
- the base 6is used as in the case of the semiconductor devices A1 to A4.
- FIG. 21shows a state in which the terminal 43 is formed. This step is performed by electroless plating as in the case of forming the terminal 4 of the semiconductor device A1.
- a process of installing the semiconductor chip 23 on the base 6is performed.
- 22 and 23show a state where the semiconductor chip 23 is installed on the base 6.
- This stepcan be performed using a commonly used solder bump forming method. In this method, solder bumps are formed on the nine terminals 43 at the center to align with the electrode terminals 231.
- the conductive connection member 33is a solder bump formed at this time.
- FIG. 24shows a state where the semiconductor chip 24 is installed on the semiconductor chip 23.
- a step of attaching a DAF tape to the bottom surface 24a of the semiconductor chip 24is performed.
- the semiconductor chip 25is installed on the surface 23 b of the semiconductor chip 23.
- the DAF tapeis the fixing member 34.
- FIG. 25shows a state where the semiconductor chip 25 is installed on the semiconductor chip 24.
- a step of attaching a DAF tape to the bottom surface 25a of the semiconductor chip 25is performed.
- the semiconductor chip 24is placed on the surface 24 b of the semiconductor chip 24.
- the DAF tapeserves as the fixing member 35.
- FIG. 26shows a state after the wire 53 is connected.
- the electrode terminals 241 and 251 and the terminals 43 arranged so as to surround the semiconductor chip 23are connected by wires 53.
- This stepcan be performed, for example, using a commercially available wire bonding capillary.
- a step of forming the sealing resin 1is performed.
- This stepcan be performed by, for example, a transfer mold method, similarly to the method described in the method for manufacturing the semiconductor device A1.
- a process of removing the base 6is performed. This step is performed by etching the base 6 from the bottom side as in the method described in the method for manufacturing the semiconductor device A1.
- the semiconductor device A5 shown in FIG. 18can be obtained by cutting the sealing resin 1 after removing the base 6.
- the semiconductor device A5is used by being incorporated in circuit boards of various electronic devices. In order to reduce the size of the circuit board, it is effective to incorporate more semiconductor chips in the same area.
- the semiconductor device A5includes three semiconductor chips 23, 24, and 25 stacked in the z direction. According to such a configuration, the number of semiconductor chips per unit area can be increased as compared with the case where the three semiconductor chips 23, 24, and 25 are separately resin-sealed and incorporated in an electronic circuit. . Therefore, the semiconductor device A5 has a configuration that is useful for reducing the size of the circuit board.
- some of the terminals 43are arranged at positions where they overlap with the semiconductor chip 23 when viewed in the z direction. This is an advantageous configuration for reducing the size of the semiconductor device A5 when viewed in the z direction.
- the nine terminals 43 arranged at positions overlapping the semiconductor chip 23 when viewed in the z directionare joined to the electrode terminals 231 provided on the bottom surface 23a of the semiconductor chip 23 by the conductive connection member 33. ing. These nine terminals 43 are difficult to drop off from the sealing resin 1.
- FIGS. 27 and 28show a semiconductor device according to the sixth embodiment of the present invention.
- the openings 401 as described in the semiconductor devices A1 to A3are formed in some of the terminals 43, and the other configurations are the same as those of the semiconductor device A5. .
- openings 401are provided in 16 terminals 43 arranged so as to surround the semiconductor chip 23 and connected to the wires 53. By providing the opening 401, these terminals 43 are less likely to drop off from the sealing resin 1.
- the nine terminals 43 arranged at positions overlapping the semiconductor chip 23 when viewed in the z directionare not provided with openings 401. Since these nine terminals 43 are joined to the bottom surface 23a of the semiconductor chip 23 via the conductive connection member 33, it is not necessary to provide the opening 401.
- the semiconductor device manufacturing method and the semiconductor device according to the present inventionare not limited to the above-described embodiments. Various changes can be made to the design of the semiconductor device manufacturing method and the specific configuration of the semiconductor device according to the present invention.
- the semiconductor device A4includes two semiconductor chips 21 and 22, another semiconductor chip may be stacked on the surface of the semiconductor chip 22 using a DAF tape.
- the semiconductor device A5includes the three semiconductor chips 23, 24, and 25, the semiconductor device A5 may be configured to include the two semiconductor chips 23 and 24 without providing the semiconductor chip 25.
- A1 to A6 Semiconductor device 1Sealing resin 2, 21, 22, 23, 24, 25 Semiconductor chip 201, 211, 221, 231, 241, 251 Electrode terminal 3, 31 Support member 32, 34, 35 Fixing member 33 Conductive connection Member 4, 41, 42, 43 Terminal 401 Opening 402 Pad part 5, 51, 52, 53 Wire 6 Base
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Abstract
Description
本発明は、半導体装置および半導体装置の製造方法に関する。The present invention relates to a semiconductor device and a method for manufacturing the semiconductor device.
従来より、ＳＯＮ（Small Outline Non-leaded Package）、ＱＦＮ（Quad Flat Non Leaded Package）と称されるパッケージ形態とされた半導体装置が広く製造されている。図２９にはＱＦＮ型の半導体装置の一例を断面図で示している（特許文献１参照）。図２９に示す半導体装置Ｘは、樹脂ケース９１と、基台リード９２と、半導体チップ９３と、リード端子９４と、接続ワイヤ９５とを備えている。半導体チップ９３は基台リード９２に固定されており、接続ワイヤ９５を介してリード端子９４と接続されている。このような半導体装置Ｘは、リードフレームを用いて製造される。リードフレームは０．２ｍｍ程度の厚みの金属板を精密プレスによる打ち抜きやエッチングによって所望パターンに形成することによって製造される。Conventionally, semiconductor devices in the form of packages called SON (Small Outline Non-leaded Package) and QFN (Quad Flat Non Non-Leaded Package) have been widely manufactured. FIG. 29 shows a cross-sectional view of an example of a QFN type semiconductor device (see Patent Document 1). A semiconductor device X shown in FIG. 29 includes aresin case 91, base leads 92, asemiconductor chip 93,lead terminals 94, andconnection wires 95. Thesemiconductor chip 93 is fixed to thebase lead 92 and is connected to thelead terminal 94 via theconnection wire 95. Such a semiconductor device X is manufactured using a lead frame. The lead frame is manufactured by forming a metal plate having a thickness of about 0.2 mm into a desired pattern by punching or etching with a precision press.
リードフレームを用いて半導体装置Ｘを製造する際には、基台リード９２に半導体チップ９３を設置し、半導体チップ９３とリード端子９４とを接続ワイヤ９５で接続した後にリードフレームを樹脂ケース９１で覆う。その後に、不要なリードフレーム部分を切断して除去する。When manufacturing the semiconductor device X using the lead frame, thesemiconductor chip 93 is installed on thebase lead 92, thesemiconductor chip 93 and thelead terminal 94 are connected by theconnection wire 95, and then the lead frame is attached by theresin case 91. cover. Thereafter, unnecessary lead frame portions are cut and removed.
各種電子機器の小型化に伴い、半導体装置Ｘの小型化および高機能化が求められている。小型化の一つの方法として、半導体装置Ｘの厚みを減らすことが考えられる。半導体装置Ｘの薄型化を図る上で、基台リード９２およびリード端子９４の厚みは不利な要素となっている。このため、リードフレームを用いずにパッケージ形態の半導体装置を製造することが提案されている。たとえば、金属製の基台上にメッキにより端子を形成し、後に基台をエッチングにより除去する手法が知られている。With the miniaturization of various electronic devices, miniaturization and high functionality of the semiconductor device X are required. One way to reduce the size is to reduce the thickness of the semiconductor device X. In reducing the thickness of the semiconductor device X, the thickness of thebase lead 92 and thelead terminal 94 is a disadvantageous factor. For this reason, it has been proposed to manufacture a packaged semiconductor device without using a lead frame. For example, a technique is known in which a terminal is formed by plating on a metal base and the base is removed by etching later.
しかしながら、リードフレームを用いず、上述のようにメッキにより端子を形成した場合、端子の厚みは２０μｍ程度となり、樹脂ケースから脱落しやすくなる可能性がある。リードフレームを用いずに半導体装置を製造する上で、端子の引き抜き強度の確保が課題となっている。However, when the terminal is formed by plating as described above without using the lead frame, the thickness of the terminal is about 20 μm, which may be easily removed from the resin case. In manufacturing a semiconductor device without using a lead frame, securing the pull-out strength of the terminal is an issue.
本発明は、上記した事情のもとで考え出されたものであって、より小型化を図りやすい半導体装置の製造方法および半導体装置を提供することをその課題とする。The present invention has been conceived under the circumstances described above, and it is an object of the present invention to provide a method of manufacturing a semiconductor device and a semiconductor device that can be more easily miniaturized.
本発明の第１の側面によって提供される半導体装置は、半導体チップと、上記半導体チップに接続された端子と、上記半導体チップおよび上記端子を覆う封止樹脂と、を備えた半導体装置であって、上記封止樹脂は、上記端子の厚み方向における一方の面を露出させるように形成されており、上記端子には、上記封止樹脂が充填される開口部が形成されていることを特徴とする。A semiconductor device provided by the first aspect of the present invention is a semiconductor device comprising a semiconductor chip, a terminal connected to the semiconductor chip, and a sealing resin covering the semiconductor chip and the terminal. The sealing resin is formed to expose one surface in the thickness direction of the terminal, and the terminal is formed with an opening filled with the sealing resin. To do.
本発明の好ましい実施の形態においては、上記開口部は、上記厚み方向に上記端子を貫通する孔状に形成されている。In a preferred embodiment of the present invention, the opening is formed in a hole shape penetrating the terminal in the thickness direction.
本発明の好ましい別の実施の形態においては、上記開口部は、上記厚み方向視において、上記厚み方向と直交する方向に凹む形状である。In another preferred embodiment of the present invention, the opening has a shape recessed in a direction orthogonal to the thickness direction when viewed in the thickness direction.
本発明のより好ましい実施の形態においては、上記半導体チップと上記端子とを接続するワイヤを備えており、上記端子は上記ワイヤが接続されるパッド部を有しており、 上記パッド部は、上記開口部よりも上記厚み方向と直交する方向において上記半導体チップから遠い位置に配置される。In a more preferred embodiment of the present invention, a wire for connecting the semiconductor chip and the terminal is provided, the terminal has a pad portion to which the wire is connected, and the pad portion is It arrange | positions in the position far from the said semiconductor chip in the direction orthogonal to the said thickness direction rather than an opening part.
本発明のより好ましい実施の形態においては、上記端子は、上記厚み方向と直交する第１の方向に長く延び、上記第１の方向において上記半導体チップから遠ざかるにつれて、上記厚み方向および上記第１の方向と直交する第２の方向における幅が狭くなるように形成されている。In a more preferred embodiment of the present invention, the terminal extends long in a first direction orthogonal to the thickness direction, and as the terminal moves away from the semiconductor chip in the first direction, the thickness direction and the first direction are increased. The width in the second direction orthogonal to the direction is narrowed.
本発明の好ましい実施の形態においては、上記半導体チップの上記厚み方向における一方の面を支持する支持部材を備えており、上記支持部材の上記厚み方向における一方の面が上記封止樹脂から露出している。In a preferred embodiment of the present invention, a support member that supports one surface of the semiconductor chip in the thickness direction is provided, and one surface of the support member in the thickness direction is exposed from the sealing resin. ing.
たとえば、上記支持部材は銀を含んでいる。For example, the support member contains silver.
好ましくは、上記端子は、複数の金属層からなる。Preferably, the terminal includes a plurality of metal layers.
本発明のより好ましい実施の形態においては、上記半導体チップの上記厚み方向における一方の面は上記支持部材に接着されており、上記半導体チップの上記厚み方向における他方の面に追加の半導体チップが設置されている。In a more preferred embodiment of the present invention, one surface of the semiconductor chip in the thickness direction is bonded to the support member, and an additional semiconductor chip is installed on the other surface of the semiconductor chip in the thickness direction. Has been.
より好ましくは、上記追加の半導体チップと接続され、厚み方向における一方の面が上記封止樹脂から露出する追加の端子を備えている。More preferably, an additional terminal that is connected to the additional semiconductor chip and is exposed from the sealing resin on one surface in the thickness direction is provided.
より好ましくは、上記追加の端子には上記封止樹脂が充填される追加の開口部が形成されている。More preferably, the additional terminal is provided with an additional opening filled with the sealing resin.
好ましい一例においては、上記追加の開口部は、上記厚み方向に上記端子を貫通する孔状に形成されている。In a preferred example, the additional opening is formed in a hole shape penetrating the terminal in the thickness direction.
好ましい別の例においては、上記追加の開口部は、上記厚み方向視において、上記厚み方向と直交する方向に凹む形状である。In another preferred example, the additional opening has a shape recessed in a direction perpendicular to the thickness direction when viewed in the thickness direction.
好ましくは、上記追加の半導体チップと上記追加の端子とを接続する追加のワイヤを備えており、上記追加の端子は上記追加のワイヤが接続される追加のパッド部を有しており、上記追加のパッド部は、上記追加の開口部よりも上記厚み方向と直交する方向において上記半導体チップから遠い位置に配置される。Preferably, an additional wire for connecting the additional semiconductor chip and the additional terminal is provided, and the additional terminal has an additional pad portion to which the additional wire is connected. The pad portion is disposed at a position farther from the semiconductor chip in a direction perpendicular to the thickness direction than the additional opening portion.
好ましくは、上記追加の半導体チップを上記半導体チップに固定する固定部材を有しており、上記固定部材はＤＡＦテープである。Preferably, a fixing member for fixing the additional semiconductor chip to the semiconductor chip is provided, and the fixing member is a DAF tape.
本発明の第２の側面によって提供される半導体装置の製造方法は、基台に端子を形成する工程と、上記基台に半導体チップを設置する工程と、上記端子および上記半導体チップを樹脂で封止する工程と、上記基台を除去する工程と、を備えた半導体装置の製造方法であって、上記端子を形成する工程は、上記端子に上記基台の厚み方向視において上記基台を露出させる開口部を形成する工程を含んでいることを特徴とする。A method of manufacturing a semiconductor device provided by the second aspect of the present invention includes a step of forming a terminal on a base, a step of installing a semiconductor chip on the base, and sealing the terminal and the semiconductor chip with a resin. And a step of removing the base, wherein the step of forming the terminal exposes the base to the terminal in the thickness direction of the base. A step of forming an opening to be formed.
好ましい製造方法においては、上記基台に端子を形成する工程は、上記基台に無電解メッキ処理を施す工程を含んでいる。In a preferred manufacturing method, the step of forming a terminal on the base includes a step of subjecting the base to electroless plating.
好ましい製造方法の一例においては、上記開口部は、上記厚み方向に貫通する孔状に形成される。In an example of a preferable manufacturing method, the opening is formed in a hole shape penetrating in the thickness direction.
好ましい製造方法の別の例においては、上記開口部は、上記厚み方向視において、上記厚み方向と直交する方向に凹む形状に形成される。In another example of a preferable manufacturing method, the opening is formed in a shape that is recessed in a direction perpendicular to the thickness direction when viewed in the thickness direction.
より好ましくは、上記端子と上記半導体チップとをワイヤで接続する工程を備えており、上記端子は、上記ワイヤが接続されるパッド部を有しており、上記パッド部は、上記開口部よりも上記厚み方向と直交する方向において上記半導体チップから遠い位置に配置される。More preferably, the method includes a step of connecting the terminal and the semiconductor chip with a wire, and the terminal includes a pad portion to which the wire is connected, and the pad portion is more than the opening portion. It arrange | positions in the position far from the said semiconductor chip in the direction orthogonal to the said thickness direction.
より好ましくは、上記基台に半導体チップを設置する工程は、上記半導体チップの上記厚み方向における一方の面を、接着部材を介して上記基台に接着する工程を含んでおり、上記端子と上記半導体チップとをワイヤで接続する工程では、上記半導体チップの上記厚み方向における他方の面に設けられた電極端子に上記ワイヤが接続される。More preferably, the step of installing the semiconductor chip on the base includes the step of adhering one surface in the thickness direction of the semiconductor chip to the base via an adhesive member, and the terminal and the above In the step of connecting the semiconductor chip to the wire, the wire is connected to an electrode terminal provided on the other surface in the thickness direction of the semiconductor chip.
たとえば、上記接着部材は銀ペーストである。For example, the adhesive member is a silver paste.
より好ましい製造方法では、上記基台に追加の端子を形成する工程と、上記半導体チップの上記厚み方向における他方の面に追加の半導体チップを設置する工程と、上記追加の半導体チップと上記追加の端子とをワイヤで接続する工程と、を備えており、上記追加の端子を形成する工程は、上記追加の端子に上記基台の厚み方向視において上記基台を露出させる追加の開口部を形成する工程を含んでいる。In a more preferable manufacturing method, a step of forming an additional terminal on the base, a step of installing an additional semiconductor chip on the other surface in the thickness direction of the semiconductor chip, the additional semiconductor chip, and the additional Connecting the terminal with a wire, and the step of forming the additional terminal forms an additional opening that exposes the base in the thickness direction of the base in the additional terminal. The process to do is included.
本発明の第３の側面によって提供される半導体装置は、複数の端子と、第１の半導体チップと、上記第１の半導体チップに設置される第２の半導体チップと、上記第１の半導体チップ、上記第２の半導体チップ、および上記複数の端子を覆う封止樹脂と、を備えており、上記複数の端子は、上記第１の半導体チップと接続された第１の端子と、上記第２の半導体チップと接続された第２の端子とを含んでおり、上記複数の端子の厚み方向における一方の面は上記封止樹脂から露出していることを特徴とする。
The semiconductor device provided by the third aspect of the present invention includes a plurality of terminals, a first semiconductor chip, a second semiconductor chip installed on the first semiconductor chip, and the first semiconductor chip. , The second semiconductor chip, and a sealing resin covering the plurality of terminals, wherein the plurality of terminals are connected to the first semiconductor chip and the second terminal. And a second terminal connected to the semiconductor chip, wherein one surface in the thickness direction of the plurality of terminals is exposed from the sealing resin.
The semiconductor device provided by the third aspect of the present invention includes a plurality of terminals, a first semiconductor chip, a second semiconductor chip installed on the first semiconductor chip, and the first semiconductor chip. , The second semiconductor chip, and a sealing resin covering the plurality of terminals, wherein the plurality of terminals are connected to the first semiconductor chip and the second terminal. And a second terminal connected to the semiconductor chip, wherein one surface in the thickness direction of the plurality of terminals is exposed from the sealing resin.
本発明の好ましい実施の形態においては、上記第１の半導体チップの上記厚み方向における一方の面を支持する支持部材を備えており、上記支持部材の上記厚み方向における一方の面は上記封止樹脂から露出している。In a preferred embodiment of the present invention, a support member that supports one surface of the first semiconductor chip in the thickness direction is provided, and the one surface of the support member in the thickness direction is the sealing resin. Is exposed from.
たとえば、上記支持部材は銀を含む。For example, the support member includes silver.
本発明の好ましい実施の形態においては、上記第１の半導体チップは、上記厚み方向における他方の面に第１の電極端子を有しており、上記第１の電極端子と上記第１の端子とを接続する第１のワイヤを備えている。In a preferred embodiment of the present invention, the first semiconductor chip has a first electrode terminal on the other surface in the thickness direction, and the first electrode terminal, the first terminal, The 1st wire which connects is provided.
より好ましくは、上記第１の端子には上記封止樹脂が充填される開口部が形成されている。More preferably, the first terminal has an opening filled with the sealing resin.
本発明の別の好ましい実施の形態においては、上記第１の端子は、上記厚み方向視において上記第１の半導体チップと重なる位置に配置されており、上記第１の半導体チップは、上記厚み方向における一方の面に第１の電極端子を有しており、上記第１の電極端子と上記第１の端子とを接続する導電接続部材を備えている。In another preferred embodiment of the present invention, the first terminal is disposed at a position overlapping the first semiconductor chip in the thickness direction view, and the first semiconductor chip is in the thickness direction. The first electrode terminal is provided on one of the surfaces, and a conductive connection member for connecting the first electrode terminal and the first terminal is provided.
たとえば、上記導電接続部材は、はんだバンプである。For example, the conductive connecting member is a solder bump.
本発明の好ましい実施の形態においては、上記第２の半導体チップの上記厚み方向における一方の面は、上記第１の半導体チップに固定されており、上記第２の半導体チップは、上記厚み方向における他方の面に第２の電極端子を備えており、上記第２の電極端子と上記第２の端子とを接続する第２のワイヤを備えている。In a preferred embodiment of the present invention, one surface in the thickness direction of the second semiconductor chip is fixed to the first semiconductor chip, and the second semiconductor chip is in the thickness direction. A second electrode terminal is provided on the other surface, and a second wire for connecting the second electrode terminal and the second terminal is provided.
好ましくは、上記第２の半導体チップと、上記第１の半導体チップとを接合する固定部材を備えている。Preferably, a fixing member for joining the second semiconductor chip and the first semiconductor chip is provided.
たとえば、上記固定部材は、ＤＡＦテープである。For example, the fixing member is a DAF tape.
好ましくは、上記第２の端子には、上記封止樹脂が充填される開口部が形成されている。Preferably, the second terminal has an opening filled with the sealing resin.
好ましくは、上記各端子は複数の金属層からなる。Preferably, each terminal is composed of a plurality of metal layers.
本発明の第４の側面によって提供される半導体装置の製造方法は、基台に複数の端子を形成する工程と、上記基台に第１の半導体チップを設置する工程と、上記第１の半導体チップに第２の半導体チップを設置する工程と、上記第１の半導体チップ、上記第２の半導体チップおよび上記複数の端子を樹脂で封止する工程と、上記基台を除去する工程と、を備えていることを特徴とする。The method for manufacturing a semiconductor device provided by the fourth aspect of the present invention includes a step of forming a plurality of terminals on a base, a step of installing a first semiconductor chip on the base, and the first semiconductor A step of placing a second semiconductor chip on the chip, a step of sealing the first semiconductor chip, the second semiconductor chip and the plurality of terminals with a resin, and a step of removing the base. It is characterized by having.
好ましい製造方法においては、上記基台に複数の端子を形成する工程は、上記基台に無電解メッキ処理を施す工程を含んでいる。In a preferred manufacturing method, the step of forming a plurality of terminals on the base includes a step of subjecting the base to electroless plating.
好ましくは、上記第１の半導体チップは、上記複数の端子の厚み方向において上記基台から遠い方の面に第１の電極端子を有しており、上記基台に上記第１の半導体チップを設置する工程は、上記第１の半導体チップの上記厚み方向における上記基台に近い方の面を、接着部材を介して上記基台に接着する工程と、上記第１の電極端子と、上記複数の端子のいずれかとを第１のワイヤで接続する工程とを含んでいるPreferably, the first semiconductor chip has a first electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals, and the first semiconductor chip is mounted on the base. The step of installing includes a step of adhering a surface closer to the base in the thickness direction of the first semiconductor chip to the base via an adhesive member, the first electrode terminal, and the plurality of Connecting to any one of the terminals with a first wire
たとえば、上記接着部材は銀ペーストである。For example, the adhesive member is a silver paste.
好ましくは、上記基台に上記複数の端子を形成する工程は、上記複数の端子に上記基台の厚み方向視において上記基台を露出させる開口部を形成する工程を含んでいる。Preferably, the step of forming the plurality of terminals on the base includes a step of forming openings that expose the base in the thickness direction of the base in the plurality of terminals.
好ましい別の製造方法においては、上記第１の半導体チップは、上記複数の端子の厚み方向において上記基台に近い方の面に第１の電極端子を有しており、上記基台に第１の半導体チップを設置する工程は、上記第１の電極端子と上記複数の端子のいずれかを導電接続部材で接続する工程を含んでいる。In another preferable manufacturing method, the first semiconductor chip has a first electrode terminal on a surface closer to the base in the thickness direction of the plurality of terminals, and the first base is provided on the base. The step of installing the semiconductor chip includes a step of connecting any one of the first electrode terminal and the plurality of terminals with a conductive connecting member.
たとえば、上記導電性接着部材は、はんだバンプである。For example, the conductive adhesive member is a solder bump.
好ましい例では、上記基台に上記複数の端子を形成する工程では、上記複数の端子を格子状に形成する。In a preferred example, in the step of forming the plurality of terminals on the base, the plurality of terminals are formed in a lattice shape.
好ましい製造方法においては、上記第２の半導体チップは、上記複数の端子の厚み方向において上記基台から遠い方の面に第２の電極端子を有しており、上記第２の電極端子と上記複数の端子のいずれかとを第２のワイヤで接続する工程を備えている。In a preferable manufacturing method, the second semiconductor chip has a second electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals, and the second electrode terminal and the second semiconductor chip The method includes a step of connecting any one of a plurality of terminals with a second wire.
好ましい製造方法においては、上記第１の半導体チップに上記第２の半導体チップを設置する工程では、上記複数の端子の厚み方向における上記第１の半導体チップの上記基台から遠い方の面と、上記第２の半導体チップの上記基台に近い方の面とを固定部材で接合する。In a preferred manufacturing method, in the step of installing the second semiconductor chip on the first semiconductor chip, the surface of the first semiconductor chip farther from the base in the thickness direction of the plurality of terminals, A surface closer to the base of the second semiconductor chip is joined with a fixing member.
たとえば、上記固定部材はＤＡＦテープである。For example, the fixing member is a DAF tape.
本発明の第５の側面によって提供される半導体装置は、複数の端子と、第１の半導体チップと、上記第１の半導体チップに設置される第２の半導体チップと、上記第２の半導体チップに設置される第３の半導体チップと、上記第１の半導体チップ、上記第２の半導体チップ、上記第３の半導体チップ、および上記複数の端子を覆う封止樹脂と、を備えており、上記複数の端子は、上記第１の半導体チップと接続された第１の端子と、上記第２の半導体チップと接続された第２の端子と、上記第３の半導体チップと接続された第３の端子とを含んでおり、上記複数の端子の厚み方向における一方の面は上記封止樹脂から露出していることを特徴とする。A semiconductor device provided by a fifth aspect of the present invention includes a plurality of terminals, a first semiconductor chip, a second semiconductor chip installed on the first semiconductor chip, and the second semiconductor chip. And a sealing resin that covers the first semiconductor chip, the second semiconductor chip, the third semiconductor chip, and the plurality of terminals. The plurality of terminals include a first terminal connected to the first semiconductor chip, a second terminal connected to the second semiconductor chip, and a third terminal connected to the third semiconductor chip. And one surface in the thickness direction of the plurality of terminals is exposed from the sealing resin.
本発明の好ましい実施の形態においては、上記第１の端子は、上記厚み方向視において上記第１の半導体チップと重なる位置に配置されており、上記第１の半導体チップは、上記厚み方向における一方の面に第１の電極端子を有しており、上記第１の電極端子と上記第１の端子とを接続する導電接続部材を備えている。In a preferred embodiment of the present invention, the first terminal is disposed at a position overlapping the first semiconductor chip in the thickness direction view, and the first semiconductor chip is arranged in one direction in the thickness direction. The first electrode terminal is provided on the surface, and a conductive connection member for connecting the first electrode terminal and the first terminal is provided.
たとえば、上記導電接続部材は、はんだバンプである。For example, the conductive connecting member is a solder bump.
たとえば、上記複数の端子は、上記厚み方向視において格子状に配列されている。For example, the plurality of terminals are arranged in a lattice shape in the thickness direction view.
本発明の好ましい実施の形態においては、上記第１の半導体チップの上記厚み方向における一方の面を支持する支持部材を備えており、上記支持部材の上記厚み方向における一方の面は上記封止樹脂から露出している。In a preferred embodiment of the present invention, a support member that supports one surface of the first semiconductor chip in the thickness direction is provided, and the one surface of the support member in the thickness direction is the sealing resin. Is exposed from.
たとえば、上記支持部材は銀を含む。For example, the support member includes silver.
本発明の別の好ましい実施の形態においては、上記第１の半導体チップは、上記厚み方向における他方の面に第１の電極端子を有しており、上記第１の電極端子と上記第１の端子とを接続する第１のワイヤを備えている。In another preferred embodiment of the present invention, the first semiconductor chip has a first electrode terminal on the other surface in the thickness direction, and the first electrode terminal and the first electrode A first wire for connecting the terminal is provided.
好ましくは、上記第１の端子には、上記封止樹脂が充填される開口部が形成されている。Preferably, the first terminal has an opening filled with the sealing resin.
本発明の好ましい実施の形態においては、上記第２の半導体チップの上記厚み方向における一方の面は、上記第１の半導体チップに固定されており、上記第２の半導体チップは、上記厚み方向における他方の面に第２の電極端子を備えており、上記第２の電極端子と上記第２の端子とを接続する第２のワイヤを備えている。In a preferred embodiment of the present invention, one surface in the thickness direction of the second semiconductor chip is fixed to the first semiconductor chip, and the second semiconductor chip is in the thickness direction. A second electrode terminal is provided on the other surface, and a second wire for connecting the second electrode terminal and the second terminal is provided.
好ましくは、上記第２の端子には、上記封止樹脂が充填される開口部が形成されている。Preferably, the second terminal has an opening filled with the sealing resin.
好ましくは、上記第２の半導体チップと、上記第１の半導体チップとを接合する第１の固定部材を備えている。Preferably, a first fixing member for joining the second semiconductor chip and the first semiconductor chip is provided.
たとえば、上記第１の固定部材は、ＤＡＦテープである。For example, the first fixing member is a DAF tape.
本発明の好ましい実施の形態においては、上記第３の半導体チップの上記厚み方向における一方の面は、上記第２の半導体チップに固定されており、上記第３の半導体チップは、上記厚み方向における他方の面に第３の電極端子を備えており、上記第３の電極端子と上記第３の端子とを接続する第３のワイヤを備えている。In a preferred embodiment of the present invention, one surface of the third semiconductor chip in the thickness direction is fixed to the second semiconductor chip, and the third semiconductor chip is fixed in the thickness direction. A third electrode terminal is provided on the other surface, and a third wire for connecting the third electrode terminal and the third terminal is provided.
好ましくは、上記第３の端子には、上記封止樹脂が充填される開口部が形成されている。Preferably, the third terminal has an opening filled with the sealing resin.
好ましくは、上記第３の半導体チップと、上記第２の半導体チップとを接合する第２の固定部材を備えている。Preferably, a second fixing member that joins the third semiconductor chip and the second semiconductor chip is provided.
たとえば、上記第２の固定部材は、ＤＡＦテープである。For example, the second fixing member is a DAF tape.
好ましくは、上記各端子は複数の金属層からなる。Preferably, each terminal is composed of a plurality of metal layers.
本発明の第６の側面によって提供される半導体装置の製造方法は、基台に複数の端子を形成する工程と、上記基台に第１の半導体チップを設置する工程と、上記第１の半導体チップに第２の半導体チップを設置する工程と、上記第２の半導体チップに第３の半導体チップを設置する工程と、上記第１の半導体チップ、上記第２の半導体チップ、上記第３の半導体チップ、および複数の端子を樹脂で封止する工程と、上記基台を除去する工程と、を備えていることを特徴とする。The method for manufacturing a semiconductor device provided by the sixth aspect of the present invention includes a step of forming a plurality of terminals on a base, a step of installing a first semiconductor chip on the base, and the first semiconductor Installing a second semiconductor chip on the chip, installing a third semiconductor chip on the second semiconductor chip, the first semiconductor chip, the second semiconductor chip, and the third semiconductor. The method includes a step of sealing the chip and the plurality of terminals with a resin, and a step of removing the base.
好ましい製造方法においては、上記基台に複数の端子を形成する工程は、上記基台に無電解メッキ処理を施す工程を含んでいる。In a preferred manufacturing method, the step of forming a plurality of terminals on the base includes a step of subjecting the base to electroless plating.
好ましくは、上記第１の半導体チップは、上記複数の端子の厚み方向において上記基台に近い方の面に第１の電極端子を有しており、上記基台に第１の半導体チップを設置する工程は、上記第１の電極端子と上記複数の端子のいずれかを導電接続部材で接続する工程を含んでいる。Preferably, the first semiconductor chip has a first electrode terminal on a surface closer to the base in the thickness direction of the plurality of terminals, and the first semiconductor chip is installed on the base. The step of performing includes a step of connecting any one of the first electrode terminal and the plurality of terminals with a conductive connecting member.
たとえば、上記導電接続部材は、はんだバンプである。For example, the conductive connecting member is a solder bump.
たとえば、上記基台に複数の端子を形成する工程では、上記複数の端子を格子状に形成する。For example, in the step of forming a plurality of terminals on the base, the plurality of terminals are formed in a lattice shape.
好ましくは、上記第１の半導体チップは、上記複数の端子の厚み方向において上記基台から遠い方の面に第１の電極端子を有しており、上記基台に第１の半導体チップを設置する工程は、上記第１の半導体チップの上記厚み方向における上記基台に近い方の面を、接着部材を介して上記基台に接着する工程と、上記第１の電極端子と、上記複数の端子のいずれかとを第１のワイヤで接続する工程と、を含んでいる。Preferably, the first semiconductor chip has a first electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals, and the first semiconductor chip is installed on the base. The step of bonding the surface of the first semiconductor chip closer to the base in the thickness direction to the base via an adhesive member, the first electrode terminal, and the plurality of the plurality of bases Connecting any of the terminals with a first wire.
たとえば、上記接着部材は銀ペーストである。For example, the adhesive member is a silver paste.
好ましくは、上記第２の半導体チップは、上記複数の端子の厚み方向において上記基台から遠い方の面に第２の電極端子を有しており、上記第２の電極端子と上記複数の端子のいずれかとを第２のワイヤで接続する工程を備えている。Preferably, the second semiconductor chip has a second electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals, and the second electrode terminal and the plurality of terminals. A step of connecting any one of the above with a second wire.
好ましくは、上記第３の半導体チップは、上記複数の端子の厚み方向において上記基台から遠い方の面に第３の電極端子を有しており、上記第３の電極端子と上記複数の端子のいずれかとを第３のワイヤで接続する工程を備えている。Preferably, the third semiconductor chip has a third electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals, and the third electrode terminal and the plurality of terminals. A step of connecting any one of the above with a third wire.
好ましくは、上記第１の半導体チップに上記第２の半導体チップを設置する工程では、上記複数の端子の厚み方向における上記第１の半導体チップの上記基台から遠い方の面と、上記第２の半導体チップの上記基台に近い方の面とを第１の固定部材で接合する。Preferably, in the step of installing the second semiconductor chip on the first semiconductor chip, the surface of the first semiconductor chip farther from the base in the thickness direction of the plurality of terminals, and the second The surface of the semiconductor chip closer to the base is joined by the first fixing member.
たとえば、上記第１の固定部材はＤＡＦテープである。For example, the first fixing member is a DAF tape.
好ましくは、上記第２の半導体チップに上記第３の半導体チップを設置する工程では、上記複数の端子の厚み方向における上記第２の半導体チップの上記基台から遠い方の面と、上記第３の半導体チップの上記基台に近い方の面とを第２の固定部材で接合する。Preferably, in the step of installing the third semiconductor chip on the second semiconductor chip, the surface of the second semiconductor chip farther from the base in the thickness direction of the plurality of terminals, and the third The surface of the semiconductor chip closer to the base is joined by a second fixing member.
たとえば、上記第２の固定部材はＤＡＦテープである。For example, the second fixing member is a DAF tape.
本発明のその他の特徴および利点は、添付図面を参照して以下に行う詳細な説明によって、より明らかとなろう。Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.
以下、本発明の好ましい実施の形態につき、図面を参照して具体的に説明する。Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.
図１～図３は、本発明の第１実施形態に基づく半導体装置を示している。本実施形態の半導体装置Ａ１は、封止樹脂１と、半導体チップ２と、支持部材３と、１０個の端子４と、１０本のワイヤ５とを備えている。なお、封止樹脂１はたとえば黒色であり、外部から内部を見ることはできないが、説明の便宜上、図１においては封止樹脂１の内部を示している。また、以下の説明で使用するｘ，ｙ，ｚ方向は互いに直交する方向であり、ｚ方向を封止樹脂１、半導体チップ２、支持部材３、および端子４の厚み方向とする。以下において、ｚ方向における図２中下側を底側とし、図２中上側を表側とする。1 to 3 show a semiconductor device according to the first embodiment of the present invention. The semiconductor device A1 of this embodiment includes a sealingresin 1, asemiconductor chip 2, asupport member 3, tenterminals 4, and tenwires 5. The sealingresin 1 is, for example, black and cannot be seen from the outside, but for the sake of convenience of explanation, FIG. 1 shows the inside of the sealingresin 1. The x, y, and z directions used in the following description are directions orthogonal to each other, and the z direction is the thickness direction of the sealingresin 1, thesemiconductor chip 2, thesupport member 3, and theterminal 4. In the following, the lower side in FIG. 2 in the z direction is the bottom side, and the upper side in FIG.
封止樹脂１は、半導体チップ２および各ワイヤ５を完全に覆い、支持部材３の底面３ａおよび各端子４の底面４ａを露出させるように支持部材３および各端子４を覆っている。封止樹脂１は、たとえばエポキシ樹脂からなり、図１に示すｘ方向に長く延びる直方体状に形成されている。一例として、封止樹脂１のｘ方向寸法は２．１０ｍｍであり、ｙ方向寸法は１．６０ｍｍであり、ｚ方向寸法は０．３５～０．４ｍｍである。これらの寸法は、半導体チップ２の大きさに応じて適宜変更され得るものである。The sealingresin 1 completely covers thesemiconductor chip 2 and eachwire 5, and covers thesupport member 3 and each terminal 4 so that thebottom surface 3a of thesupport member 3 and thebottom surface 4a of each terminal 4 are exposed. The sealingresin 1 is made of, for example, an epoxy resin and is formed in a rectangular parallelepiped shape that extends long in the x direction shown in FIG. As an example, the x-direction dimension of the sealingresin 1 is 2.10 mm, the y-direction dimension is 1.60 mm, and the z-direction dimension is 0.35 to 0.4 mm. These dimensions can be appropriately changed according to the size of thesemiconductor chip 2.
半導体チップ２は、Ｓｉなどの半導体材料からなり、内部には微細回路が作りこまれている。半導体チップ２は、ｚ方向において互いに反対を向く底面２ａおよび表面２ｂを有しており、底面２ａは表面２ｂよりも図２中下方に位置している。半導体チップ２の底面２ａは支持部材３に固定されている。半導体チップ２の表面２ｂには１０個の電極端子２０１が設けられている。１０個の電極端子２０１は、ｚ方向視において矩形状に配置されている。各電極端子２０１は、半導体チップ２内の微細回路に接続されている。半導体チップ２は、たとえば電子回路に組み込まれて使用される。その際、各電極端子２０１を電子回路内の配線と接続することより、半導体チップ２はその機能を発揮する。なお、電極端子２０１の個数は半導体チップ２の機能に応じて適宜変更され得るものである。Thesemiconductor chip 2 is made of a semiconductor material such as Si, and a fine circuit is formed inside. Thesemiconductor chip 2 has abottom surface 2a and asurface 2b that are opposite to each other in the z direction, and thebottom surface 2a is located below thesurface 2b in FIG. Thebottom surface 2 a of thesemiconductor chip 2 is fixed to thesupport member 3. Tenelectrode terminals 201 are provided on thesurface 2 b of thesemiconductor chip 2. The tenelectrode terminals 201 are arranged in a rectangular shape when viewed in the z direction. Eachelectrode terminal 201 is connected to a fine circuit in thesemiconductor chip 2. Thesemiconductor chip 2 is used by being incorporated in an electronic circuit, for example. At that time, thesemiconductor chip 2 exhibits its function by connecting eachelectrode terminal 201 to the wiring in the electronic circuit. The number ofelectrode terminals 201 can be changed as appropriate according to the function of thesemiconductor chip 2.
支持部材３は、たとえば銀製であり、図１および図３に示すように、ｚ方向視略矩形状であり、半導体装置Ａ１のｘ，ｙ方向における中央に配置されている。さらに、図２に示すように、支持部材３の底面３ａは封止樹脂１の底面１ａとｚ方向において同一の位置にある。Thesupport member 3 is made of, for example, silver and has a substantially rectangular shape in the z direction as shown in FIGS. 1 and 3 and is arranged at the center in the x and y directions of the semiconductor device A1. Furthermore, as shown in FIG. 2, thebottom surface 3 a of thesupport member 3 is in the same position as the bottom surface 1 a of the sealingresin 1 in the z direction.
１０個の端子４は、図１に示すように、半導体チップ２を囲む矩形状に配置されている。各端子４はｚ方向視矩形状に形成されており、金製のワイヤ５によって各電極端子２０１に接続されている。ワイヤ５を設置する際に不当な接触が生じるのを防ぐために、端子４同士はたとえば０．５０ｍｍ程度離間している。このような間隔を確保するために、ｙ方向における中央に配置された１対の端子４は、ｘ方向に長く延びるように配置され、その他の端子４はｙ方向に長く延びるように配置されている。各端子４の長手方向における長さは、たとえば０．３５ｍｍである。なお、端子４の個数は半導体チップ２の電極端子２０１の個数に応じたものであり、半導体チップ２の機能に応じて適宜変更され得るものである。The tenterminals 4 are arranged in a rectangular shape surrounding thesemiconductor chip 2 as shown in FIG. Eachterminal 4 is formed in a rectangular shape as viewed in the z direction, and is connected to eachelectrode terminal 201 by agold wire 5. In order to prevent improper contact when thewire 5 is installed, theterminals 4 are separated from each other by about 0.50 mm, for example. In order to ensure such an interval, the pair ofterminals 4 arranged at the center in the y direction are arranged so as to extend long in the x direction, and theother terminals 4 are arranged so as to extend long in the y direction. Yes. The length of each terminal 4 in the longitudinal direction is, for example, 0.35 mm. Note that the number ofterminals 4 corresponds to the number ofelectrode terminals 201 of thesemiconductor chip 2 and can be changed as appropriate according to the function of thesemiconductor chip 2.
図２では簡略化のために省略しているが、各端子４は、たとえば無電解メッキにより積層された複数の金属層により構成されている。各端子４を構成する複数の金属層の例としては好ましいのは、金層、ニッケル層、パラジウム層である。この際、底面４ａ側に金層が、中央にニッケル層が、表面４ｂ側にパラジウム層が配置される。このような各端子４の厚みは、たとえば０．０１５ｍｍとなる。Although omitted in FIG. 2 for simplification, eachterminal 4 is composed of a plurality of metal layers laminated by, for example, electroless plating. Preferred examples of the plurality of metal layers constituting each terminal 4 are a gold layer, a nickel layer, and a palladium layer. At this time, a gold layer is disposed on thebottom surface 4a side, a nickel layer is disposed in the center, and a palladium layer is disposed on thesurface 4b side. Such aterminal 4 has a thickness of, for example, 0.015 mm.
各端子４には開口部４０１が形成されている。図１に示す例では、開口部４０１は、ｚ方向視円形であり、ｚ方向に貫通するように形成されている。各開口部４０１は封止樹脂１によって充填されている。開口部４０１の直径は０．０６～０．０７ｍｍ程度である。図１に示すように、各端子４において開口部４０１は、各端子４の長手方向において半導体チップ２により近い方の端部付近に形成されている。Eachterminal 4 has anopening 401 formed therein. In the example illustrated in FIG. 1, theopening 401 has a circular shape in the z direction and is formed so as to penetrate in the z direction. Eachopening 401 is filled with the sealingresin 1. The diameter of theopening 401 is about 0.06 to 0.07 mm. As shown in FIG. 1, theopening 401 in each terminal 4 is formed near the end closer to thesemiconductor chip 2 in the longitudinal direction of eachterminal 4.
各端子４は、ワイヤ５が接続されるパッド部４０２を備えている。パッド部４０２は、各端子４の長手方向において半導体チップ２から遠い方の端部を含む領域である。各パッド部４０２の各端子４の長手方向における長さは、たとえば０．２１ｍｍである。パッド部４０２の長さはワイヤ５を適切に配置する上で望ましい長さが選択される。上述の開口部４０１は、ワイヤ５の配置を妨げないようにパッド部４０２よりも各端子４の長手方向において半導体チップ２に近い位置に配置される。なお、パッド部４０２を半導体チップ２から比較的遠い位置に設定するのは、その方がワイヤ５を設置し易いからである。Eachterminal 4 includes apad portion 402 to which thewire 5 is connected. Thepad portion 402 is a region including an end portion far from thesemiconductor chip 2 in the longitudinal direction of eachterminal 4. The length of each terminal 4 in eachpad portion 402 in the longitudinal direction is, for example, 0.21 mm. The length of thepad portion 402 is selected to be a desirable length for properly arranging thewires 5. Theopening 401 described above is disposed at a position closer to thesemiconductor chip 2 in the longitudinal direction of each terminal 4 than thepad portion 402 so as not to disturb the arrangement of thewires 5. Thepad portion 402 is set at a relatively far position from thesemiconductor chip 2 because thewire 5 is easier to install.
次に、半導体装置Ａ１の製造方法の一例について、図４～図８を参照しつつ以下に説明する。Next, an example of a method for manufacturing the semiconductor device A1 will be described below with reference to FIGS.
半導体装置Ａ１の製造には基台６を用いる。基台６は、たとえばｚ方向における厚みは０．１２５ｍｍ程度の銅板である。基台６はｚ方向視において多数の半導体装置Ａ１を含むような矩形状である。Thebase 6 is used for manufacturing the semiconductor device A1. Thebase 6 is a copper plate having a thickness in the z direction of about 0.125 mm, for example. Thebase 6 has a rectangular shape including a large number of semiconductor devices A1 when viewed in the z direction.
半導体装置Ａ１を製造する際には、まず基台６を用意し、基台６の表面に端子４を形成する工程を行う。端子４を形成する工程では、たとえば無電解メッキ処理により基台６の表面全体に金属メッキ層を形成する。その後に金属メッキ層をエッチングにより所望の形状とする。このようにすることで、図４に示すように多数の端子４を基台６上に形成することができる。When manufacturing the semiconductor device A1, first, thebase 6 is prepared, and the process of forming theterminals 4 on the surface of thebase 6 is performed. In the step of forming theterminals 4, a metal plating layer is formed on the entire surface of thebase 6 by, for example, electroless plating. Thereafter, the metal plating layer is formed into a desired shape by etching. By doing in this way,many terminals 4 can be formed on thebase 6, as shown in FIG.
次に、半導体チップ２を基台６に設置する工程を行う。図５には基台６に半導体チップ２を設置した状態を示している。この工程では、まず、半導体チップ２の底面に銀ペーストからなる接着材料を付着させる工程を行う。次に、図５に示すように、各端子４に囲まれた領域に半導体チップ２を設置する工程を行う。上記接着材料が硬化したものが支持部材３となる。Next, a process of installing thesemiconductor chip 2 on thebase 6 is performed. FIG. 5 shows a state where thesemiconductor chip 2 is installed on thebase 6. In this step, first, a step of attaching an adhesive material made of silver paste to the bottom surface of thesemiconductor chip 2 is performed. Next, as shown in FIG. 5, a step of installing thesemiconductor chip 2 in a region surrounded by theterminals 4 is performed. Thesupport member 3 is obtained by curing the adhesive material.
次に、半導体チップ２と各端子４とをワイヤ５で接続する工程を行う。図６にはワイヤ５を接続した後の状態を示している。図６に示すように、各半導体チップ２には１０個の電極端子２０１が設けられている。この工程では、各電極端子２０１と各端子４のパッド部４０２との間をワイヤ５で接続する。この工程は、たとえば市販されているワイヤボンディング用キャピラリを用いて行うことができる。Next, a process of connecting thesemiconductor chip 2 and each terminal 4 with thewire 5 is performed. FIG. 6 shows a state after thewire 5 is connected. As shown in FIG. 6, eachsemiconductor chip 2 is provided with tenelectrode terminals 201. In this step, thewire 5 is connected between eachelectrode terminal 201 and thepad portion 402 of eachterminal 4. This step can be performed, for example, using a commercially available wire bonding capillary.
次に、封止樹脂１を形成する工程を行う。図７には封止樹脂１を形成した後の状態を示している。この工程は、たとえばトランスファモールド法により行うことができる。この方法では、基台６を金型に設置し、金型内に液化したエポキシ樹脂を流し込む処理が行われる。このとき、液化したエポキシ樹脂は開口部４０１にも流れ込む。Next, a step of forming the sealingresin 1 is performed. FIG. 7 shows a state after the sealingresin 1 is formed. This step can be performed by, for example, a transfer mold method. In this method, thebase 6 is installed in a mold, and a process of pouring liquefied epoxy resin into the mold is performed. At this time, the liquefied epoxy resin also flows into theopening 401.
次に、基台６を除去する工程を行う。図８には基台６を除去した後の状態を示している。基台６を除去する工程は、基台６を底面側からエッチングすることにより行われる。なお、エッチング処理は、機械的に研磨することで行ってもよく、銅を融解させる液剤を用いて行ってもよい。この工程により、図８に示すように、支持部材３の底面３ａおよび各端子４の底面４ａが封止樹脂１の底面１ａ側に露出する。Next, a process of removing thebase 6 is performed. FIG. 8 shows a state after thebase 6 is removed. The step of removing thebase 6 is performed by etching thebase 6 from the bottom surface side. The etching treatment may be performed by mechanical polishing or may be performed using a liquid agent that melts copper. By this step, as shown in FIG. 8, thebottom surface 3 a of thesupport member 3 and thebottom surface 4 a of each terminal 4 are exposed to the bottom surface 1 a side of the sealingresin 1.
図８に示す状態において、封止樹脂１はｚ方向視において基台６と同じサイズである。図８の封止樹脂１を切断することで、図１に示す半導体装置Ａ１を得ることができる。In the state shown in FIG. 8, the sealingresin 1 is the same size as thebase 6 when viewed in the z direction. By cutting the sealingresin 1 of FIG. 8, the semiconductor device A1 shown in FIG. 1 can be obtained.
次に、半導体装置Ａ１およびその製造方法の作用について説明する。Next, the operation of the semiconductor device A1 and its manufacturing method will be described.
各端子４はメッキ処理により基台６の表面に形成されているため、各端子４の厚みは、従来の説明で示した半導体装置Ｘの端子９４の厚みと比べて薄いものとなる。上述した製造方法は、薄型化を図る上で好ましい構成を備えている。Since each terminal 4 is formed on the surface of thebase 6 by plating, the thickness of each terminal 4 is thinner than the thickness of the terminal 94 of the semiconductor device X shown in the conventional description. The manufacturing method described above has a preferable configuration for reducing the thickness.
本実施形態では、各端子４に開口部４０１が形成されており、開口部４０１には封止樹脂１が充填されており、開口部４０１を設けない場合に比べて各端子４と封止樹脂１とが接触する面積は大きくなっている。このため、各端子４と封止樹脂１との間に働く摩擦力が大きくなっており、各端子４は封止樹脂１から脱落しにくくなっている。従って、半導体装置Ａ１の構成によれば、各端子４を薄くすることで生じる問題を解消し、信頼性の向上を図ることができる。In the present embodiment, eachterminal 4 is provided with anopening 401, and theopening 401 is filled with the sealingresin 1, and each terminal 4 and the sealing resin are compared with the case where theopening 401 is not provided. The area in contact with 1 is large. For this reason, the frictional force acting between each terminal 4 and the sealingresin 1 is large, and each terminal 4 is difficult to drop off from the sealingresin 1. Therefore, according to the configuration of the semiconductor device A1, it is possible to solve the problem caused by making each terminal 4 thinner and to improve the reliability.
本実施形態においては、半導体チップ２を搭載する支持部材３の底面３ａが封止樹脂１から露出している。さらに、支持部材３は銀製であり、熱伝導性に優れている。従って、半導体チップ２が駆動時に発する熱は支持部材３を通じて半導体装置Ａ１の外部に速やかに放出される。In the present embodiment, thebottom surface 3 a of thesupport member 3 on which thesemiconductor chip 2 is mounted is exposed from the sealingresin 1. Furthermore, thesupport member 3 is made of silver and has excellent thermal conductivity. Accordingly, heat generated when thesemiconductor chip 2 is driven is quickly released to the outside of the semiconductor device A1 through thesupport member 3.
図９～図２８は、本発明の他の実施形態を示している。なお、これらの図において、上記実施形態と同一または類似の要素には、上記実施形態と同一の符号を付している。9 to 28 show other embodiments of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment.
図９は、本発明の第２実施形態に基づく半導体装置を示している。本実施形態の半導体装置Ａ２は、各端子４の開口部４０１の形状が半導体装置Ａ１のものとは異なっており、その他の構成は半導体装置Ａ１と同様となっている。FIG. 9 shows a semiconductor device according to the second embodiment of the present invention. In the semiconductor device A2 of this embodiment, the shape of theopening 401 of each terminal 4 is different from that of the semiconductor device A1, and other configurations are the same as those of the semiconductor device A1.
図９に示すように、本実施形態における開口部４０１は、ｚ方向視矩形状であり、各端子４の長辺から短手方向に凹むように形成されている。図９に示す例では、ｙ方向における中央の端子４には開口部４０１がｙ方向における両側に設けられている。これは中央の端子４は、他の端子４と比べて幅を確保しやすいためである。十分な幅を確保できる場合には、他の端子４の両側に開口部４０１を設けてもよい。As shown in FIG. 9, theopening 401 in the present embodiment has a rectangular shape when viewed in the z direction, and is formed so as to be recessed in the short direction from the long side of eachterminal 4. In the example shown in FIG. 9, thecenter terminal 4 in the y direction hasopenings 401 on both sides in the y direction. This is because thecenter terminal 4 is easier to secure the width than theother terminals 4. If a sufficient width can be secured, theopenings 401 may be provided on both sides of theother terminals 4.
図１０は、本発明の第３実施形態に基づく半導体装置を示している。本実施形態の半導体装置Ａ３は、各端子４および開口部４０１の形状が半導体装置Ａ１のものとは異なっており、その他の構成は半導体装置Ａ１と同様となっている。FIG. 10 shows a semiconductor device according to the third embodiment of the present invention. In the semiconductor device A3 of the present embodiment, the shape of each terminal 4 and theopening 401 is different from that of the semiconductor device A1, and other configurations are the same as those of the semiconductor device A1.
なお、図１０に示す開口部４０１の形状は一例である。本実施形態における開口部４０１は各端子４の端縁から内方へ凹む形状であればよく、ｚ方向視形状はどのようなものでもよい。また、図１０に示す例では、開口部４０１は各端子４の短辺から長手方向に凹んでいるが、長辺から短手方向に凹む形状であってもよい。Note that the shape of theopening 401 shown in FIG. 10 is an example. Theopening 401 in the present embodiment may be any shape that is recessed inward from the edge of each terminal 4 and may have any shape as viewed in the z direction. Further, in the example shown in FIG. 10, theopening 401 is recessed in the longitudinal direction from the short side of each terminal 4, but may have a shape recessed in the lateral direction from the long side.
本実施形態における各端子４は、図１０に示すように、長手方向において半導体チップ２から遠ざかるにつれて短手方向の幅が短くなる形状となっている。各開口部４０１は、各端子４の長手方向における半導体チップ２に近いほうの端縁から長手方向に凹むように形成されている。As shown in FIG. 10, each terminal 4 in the present embodiment has a shape in which the width in the short direction becomes shorter as the distance from thesemiconductor chip 2 increases in the longitudinal direction. Eachopening 401 is formed so as to be recessed in the longitudinal direction from an end edge closer to thesemiconductor chip 2 in the longitudinal direction of eachterminal 4.
本実施形態によれば、開口部４０１を比較的大きなものにすることができる。このことは、各端子４と封止樹脂１との接触面積を増やす上で好ましい構成である。According to the present embodiment, theopening 401 can be made relatively large. This is a preferable configuration for increasing the contact area between each terminal 4 and the sealingresin 1.
図１１および図１２は、本発明の第４実施形態に基づく半導体装置を示している。本実施形態の半導体装置Ａ４は、封止樹脂１、２つの半導体チップ２１，２２、支持部材３１、固定部材３２、３２個の端子４１、３６個の端子４２、３２本のワイヤ５１、および３６本のワイヤ５２を備えている。11 and 12 show a semiconductor device according to the fourth embodiment of the present invention. The semiconductor device A4 of this embodiment includes a sealingresin 1, twosemiconductor chips support member 31, a fixingmember terminals 41, 36terminals wires 51, and 36. Awire 52 is provided.
封止樹脂１は、半導体チップ２１，２２、固定部材３２および各ワイヤ５１，５２を完全に覆い、支持部材３１の底面３１ａおよび各端子４１，４２の底面４１ａ，４２ａを露出させるように支持部材３１および各端子４１，４２を覆っている。封止樹脂１は、たとえばエポキシ樹脂からなり、ｚ方向視正方形状に形成されている。The sealingresin 1 completely covers the semiconductor chips 21 and 22, the fixingmember 32 and thewires bottom surface 31 a of thesupport member 31 and the bottom surfaces 41 a and 42 a of theterminals terminals resin 1 is made of, for example, an epoxy resin and is formed in a square shape as viewed in the z direction.
半導体チップ２１は、Ｓｉなどの半導体材料からなり、内部には微細回路が作りこまれている。半導体チップ２１は、ｚ方向において互いに反対を向く底面２１ａおよび表面２１ｂを有しており、底面２１ａは表面２１ｂよりも図１２中下方に位置している。半導体チップ２１の底面２１ａは支持部材３１に固定されている。半導体チップ２１の表面２１ｂには３２個の電極端子２１１が設けられている。３２個の電極端子２１１は、ｚ方向視において矩形状に配置されている。各電極端子２１１は、半導体チップ２１内の微細回路に接続されている。半導体チップ２１は、たとえば電子回路に組み込まれて使用される。その際、各電極端子２１１を電子回路内の配線と接続することより、半導体チップ２１はその機能を発揮する。なお、電極端子２１１の個数は半導体チップ２１の機能に応じて適宜変更され得るものである。Thesemiconductor chip 21 is made of a semiconductor material such as Si, and a fine circuit is formed inside. Thesemiconductor chip 21 has abottom surface 21a and a surface 21b that face each other in the z direction, and thebottom surface 21a is located below the surface 21b in FIG. Thebottom surface 21 a of thesemiconductor chip 21 is fixed to thesupport member 31. 32electrode terminals 211 are provided on the surface 21 b of thesemiconductor chip 21. The 32electrode terminals 211 are arranged in a rectangular shape when viewed in the z direction. Eachelectrode terminal 211 is connected to a fine circuit in thesemiconductor chip 21. Thesemiconductor chip 21 is used by being incorporated in an electronic circuit, for example. At that time, thesemiconductor chip 21 exhibits its function by connecting eachelectrode terminal 211 to the wiring in the electronic circuit. The number ofelectrode terminals 211 can be changed as appropriate according to the function of thesemiconductor chip 21.
支持部材３１は、たとえば銀ペーストにより形成されている。図１１に示すように、支持部材３１は、ｚ方向視略矩形状であり、半導体装置Ａ４のｘ，ｙ方向における中央に配置されている。さらに、図１２に示すように、支持部材３１の底面３１ａは封止樹脂１の底面１ａとｚ方向において同一の位置にある。Thesupport member 31 is made of, for example, silver paste. As shown in FIG. 11, thesupport member 31 has a substantially rectangular shape when viewed in the z direction, and is disposed at the center in the x and y directions of the semiconductor device A4. Furthermore, as shown in FIG. 12, thebottom surface 31 a of thesupport member 31 is in the same position as the bottom surface 1 a of the sealingresin 1 in the z direction.
半導体チップ２２は、Ｓｉなどの半導体材料からなり、内部には微細回路が作りこまれている。半導体チップ２２は、ｚ方向において互いに反対を向く底面２２ａおよび表面２２ｂを有しており、底面２２ａは表面２２ｂよりも図１２中下方に位置している。半導体チップ２２は半導体チップ２１と比較してｚ方向視におけるサイズが小さなものである。半導体チップ２２の底面２２ａは固定部材３２を介して半導体チップ２１の表面２１ｂに固定されている。半導体チップ２２の表面２２ｂには３６個の電極端子２２１が設けられている。３６個の電極端子２２１は、ｚ方向視において矩形状に配置されている。各電極端子２２１は、半導体チップ２２内の微細回路に接続されている。半導体チップ２２は、半導体チップ２１とともに電子回路に組み込まれて使用される。その際、各電極端子２２１を電子回路内の配線と接続することより、半導体チップ２２はその機能を発揮する。なお、電極端子２２１の個数は半導体チップ２２の機能に応じて適宜変更され得るものである。Thesemiconductor chip 22 is made of a semiconductor material such as Si, and a fine circuit is formed inside. Thesemiconductor chip 22 has abottom surface 22a and asurface 22b that are opposite to each other in the z direction, and thebottom surface 22a is located below thesurface 22b in FIG. Thesemiconductor chip 22 is smaller in size as viewed in the z direction than thesemiconductor chip 21. Thebottom surface 22 a of thesemiconductor chip 22 is fixed to the surface 21 b of thesemiconductor chip 21 through a fixingmember 32. 36electrode terminals 221 are provided on thesurface 22 b of thesemiconductor chip 22. The 36electrode terminals 221 are arranged in a rectangular shape when viewed in the z direction. Eachelectrode terminal 221 is connected to a fine circuit in thesemiconductor chip 22. Thesemiconductor chip 22 is used together with thesemiconductor chip 21 in an electronic circuit. At that time, thesemiconductor chip 22 exhibits its function by connecting eachelectrode terminal 221 to the wiring in the electronic circuit. The number ofelectrode terminals 221 can be changed as appropriate according to the function of thesemiconductor chip 22.
固定部材３２は、たとえば、ダイアタッチフィルムテープ（以下、ＤＡＦテープ）である。図１１に示すように、固定部材３２は、ｚ方向視略矩形状であり、３２個の電極端子２１１が成す矩形枠の内側に配置されている。The fixingmember 32 is, for example, a die attach film tape (hereinafter referred to as a DAF tape). As shown in FIG. 11, the fixingmember 32 has a substantially rectangular shape as viewed in the z direction, and is disposed inside a rectangular frame formed by the 32electrode terminals 211.
３２個の端子４１は、図１１に示すように半導体チップ２１，２２を囲む枠状に配置されている。図１１に示す例では、３２個の端子４１は８個の端子４１からなる４つの列に分けられている。４つの列のうちの２つの列では８個の端子４１はｘ方向に沿って配列されており、他の２つの列ではｙ方向に沿って配列されている。各端子４１は、ｚ方向視長矩形状であり、上記の配列方向は各端子４１の短手方向となっている。各端子４１は、上述した半導体装置Ａ１における各端子４と同様に、開口部４０１と、パッド部４０２とを有している。各端子４１の各パッド部４０２は金製のワイヤ５１によって各電極端子２１１に接続されている。端子４１の個数は半導体チップ２１の電極端子２１１の個数に応じたものであり、半導体チップ２１の機能に応じて適宜変更され得るものである。The 32terminals 41 are arranged in a frame shape surrounding the semiconductor chips 21 and 22, as shown in FIG. In the example shown in FIG. 11, the 32terminals 41 are divided into four columns of eightterminals 41. In two of the four columns, the eightterminals 41 are arranged along the x direction, and in the other two columns, they are arranged along the y direction. Each terminal 41 has a rectangular shape when viewed in the z direction, and the arrangement direction is the short direction of each terminal 41. Each terminal 41 has anopening 401 and apad portion 402, like each terminal 4 in the semiconductor device A1 described above. Eachpad portion 402 of each terminal 41 is connected to eachelectrode terminal 211 by agold wire 51. The number ofterminals 41 corresponds to the number ofelectrode terminals 211 of thesemiconductor chip 21 and can be changed as appropriate according to the function of thesemiconductor chip 21.
３６個の端子４２は、図１１に示すように、３２個の端子４１が作る枠を囲む枠状に配置されている。図１１に示す例では、３６個の端子４２は９個の端子４２からなる４つの列に分けられている。４つの列のうちの２つの列では９個の端子４２はｘ方向に沿って配列されており、他の２つの列ではｙ方向に沿って配列されている。各端子４２は、ｚ方向視長矩形状であり、上記の配列方向は各端子４２の短手方向となっている。各端子４２には、上述した半導体装置Ａ１における各端子４と同様に、開口部４０１が形成され、パッド部４０２が設けられている。各端子４２の各パッド部４０２は金製のワイヤ５２によって各電極端子２２１に接続されている。端子４２の個数は半導体チップ２２の電極端子２２１の個数に応じたものであり、半導体チップ２２の機能に応じて適宜変更され得るものである。The 36terminals 42 are arranged in a frame shape surrounding a frame formed by 32terminals 41, as shown in FIG. In the example shown in FIG. 11, the 36terminals 42 are divided into four columns of nineterminals 42. Nineterminals 42 are arranged along the x direction in two of the four rows, and are arranged along the y direction in the other two rows. Each terminal 42 has a rectangular shape viewed in the z direction, and the arrangement direction is a short direction of each terminal 42. Each terminal 42 is provided with anopening 401 and apad portion 402 as in the case of each terminal 4 in the semiconductor device A1 described above. Eachpad portion 402 of each terminal 42 is connected to eachelectrode terminal 221 by agold wire 52. The number ofterminals 42 corresponds to the number ofelectrode terminals 221 of thesemiconductor chip 22 and can be changed as appropriate according to the function of thesemiconductor chip 22.
図１２では簡略化のために省略しているが、各端子４１，４２は、半導体装置Ａ１における端子４と同様に複数の金属層により構成されている。このような各端子４１，４２の厚みは、たとえば０．０１５ｍｍとなる。Although omitted in FIG. 12 for simplification, each of theterminals terminal 4 in the semiconductor device A1. The thickness of each ofsuch terminals
次に、半導体装置Ａ４の製造方法の一例について、図１３～図１７を参照しつつ以下に説明する。Next, an example of a method for manufacturing the semiconductor device A4 will be described below with reference to FIGS.
半導体装置Ａ４を製造する際にも、半導体装置Ａ１の場合と同様に基台６を用いる。When manufacturing the semiconductor device A4, thebase 6 is used as in the case of the semiconductor device A1.
半導体装置Ａ４を製造する際には、まず基台６を用意し、基台６の表面に端子４１，４２を形成する工程を行う。図１３には、端子４１，４２が形成された状態を示している。この工程は、半導体装置Ａ１の端子４を形成する場合と同様に無電解メッキ処理を行い、その後に開口部４０１を形成することで行うことができる。本工程では、端子４１，４２を露出させる被覆部材を基台６に設置する。When manufacturing the semiconductor device A4, first, thebase 6 is prepared, and the process of forming theterminals base 6 is performed. FIG. 13 shows a state in which theterminals terminal 4 of the semiconductor device A1, and then forming theopening 401. In this step, a covering member that exposes theterminals base 6.
次に、半導体チップ２１を基台６に設置する工程を行う。図１４には基台６に半導体チップ２１を設置した状態を示している。この工程では、まず、半導体チップ２１の底面に銀ペーストからなる接着材料を付着させる工程を行う。次に、図１４に示すように、各端子４１に囲まれた領域に半導体チップ２１を設置する。上記接着材料が硬化したものが支持部材３１となる。Next, a process of installing thesemiconductor chip 21 on thebase 6 is performed. FIG. 14 shows a state where thesemiconductor chip 21 is installed on thebase 6. In this step, first, a step of attaching an adhesive material made of silver paste to the bottom surface of thesemiconductor chip 21 is performed. Next, as shown in FIG. 14, thesemiconductor chip 21 is installed in a region surrounded by theterminals 41. Thesupport member 31 is formed by curing the adhesive material.
次に、半導体チップ２２を半導体チップ２１に設置する工程を行う。図１５には半導体チップ２１に半導体チップ２２を設置した状態を示している。この工程では、まず、半導体チップ２２の底面にＤＡＦテープを貼り付ける工程を行う。次に、図１５に示すように、各電極端子２１１に囲まれた領域に半導体チップ２２を設置する。上記ＤＡＦテープが固定部材３２となる。Next, a process of installing thesemiconductor chip 22 on thesemiconductor chip 21 is performed. FIG. 15 shows a state where thesemiconductor chip 22 is installed on thesemiconductor chip 21. In this step, first, a step of attaching a DAF tape to the bottom surface of thesemiconductor chip 22 is performed. Next, as shown in FIG. 15, thesemiconductor chip 22 is installed in a region surrounded by eachelectrode terminal 211. The DAF tape is the fixingmember 32.
次に、半導体チップ２１と各端子４１とをワイヤ５１で接続する工程を行う。図１６にはワイヤ５１を設置した後の状態を示している。図１６に示すように、半導体チップ２１には３２個の電極端子２１１が設けられている。この工程では、各電極端子２１１と各端子４１のパッド部４０２との間にワイヤ５１を設置する。ワイヤ５１の設置は、たとえば市販されているワイヤボンディング用キャピラリを用いて行うことができる。Next, a step of connecting thesemiconductor chip 21 and each terminal 41 with thewire 51 is performed. FIG. 16 shows a state after thewire 51 is installed. As shown in FIG. 16, thesemiconductor chip 21 is provided with 32electrode terminals 211. In this step, thewire 51 is installed between eachelectrode terminal 211 and thepad portion 402 of each terminal 41. Thewire 51 can be installed using a commercially available wire bonding capillary, for example.
次に、半導体チップ２２と各端子４２とをワイヤ５２で接続する工程を行う。図１７にはワイヤ５２を接続した後の状態を示している。図１７に示すように、半導体チップ２２には３６個の電極端子２２１が設けられている。この工程では、各電極端子２２１と各端子４２のパッド部４０２との間をワイヤ５２で接続する。この工程は、たとえば市販されているワイヤボンディング用キャピラリを用いて行うことができる。Next, the process of connecting thesemiconductor chip 22 and each terminal 42 with thewire 52 is performed. FIG. 17 shows a state after thewire 52 is connected. As shown in FIG. 17, thesemiconductor chip 22 is provided with 36electrode terminals 221. In this step, eachelectrode terminal 221 and thepad portion 402 of each terminal 42 are connected by awire 52. This step can be performed, for example, using a commercially available wire bonding capillary.
次に、封止樹脂１を形成する工程を行う。この工程は、半導体装置Ａ１の製造方法で説明した方法と同様にたとえばトランスファモールド法により行うことができる。Next, a step of forming the sealingresin 1 is performed. This step can be performed by, for example, a transfer mold method, similarly to the method described in the method for manufacturing the semiconductor device A1.
次に、基台６を除去する工程を行う。この工程は、半導体装置Ａ１の製造方法で説明した方法と同様に基台６を底面側からエッチングすることにより行われる。基台６を除去した後に封止樹脂１を切断することにより、図１１，１２に示す半導体装置Ａ４を得ることができる。Next, a process of removing thebase 6 is performed. This step is performed by etching thebase 6 from the bottom side as in the method described in the method for manufacturing the semiconductor device A1. By removing the sealingresin 1 after removing thebase 6, the semiconductor device A4 shown in FIGS. 11 and 12 can be obtained.
次に、半導体装置Ａ４およびその製造方法の作用について説明する。Next, the operation of the semiconductor device A4 and its manufacturing method will be described.
半導体装置Ａ４は、各種電子機器の回路基板に組み込まれて使用される。回路基板の小型化を図るには、同一面積内により多くの半導体チップを組み込むことが有効である。半導体装置Ａ４では、半導体チップ２１の表面２１ｂに半導体チップ２２が固定されている。このような構成によれば、２つの半導体チップ２１，２２を別々に樹脂封止して電子回路に組み込んだ場合に比べて、単位面積あたりの半導体チップの個数を増やすことが可能である。従って、半導体装置Ａ４は、回路基板の小型化を図る上で有益な構成を備えている。The semiconductor device A4 is used by being incorporated in circuit boards of various electronic devices. In order to reduce the size of the circuit board, it is effective to incorporate more semiconductor chips in the same area. In the semiconductor device A4, thesemiconductor chip 22 is fixed to the surface 21b of thesemiconductor chip 21. According to such a configuration, the number of semiconductor chips per unit area can be increased as compared with the case where the twosemiconductor chips
図１８～図２０は、本発明の第５実施形態に基づく半導体装置を示している。本実施形態の半導体装置Ａ５は、封止樹脂１、３つの半導体チップ２３，２４，２５、９個の導電接続部材３３、固定部材３４，３５、２５個の端子４３、および１６本のワイヤ５３を備えている。半導体装置Ａ５はエリアアレイ型の半導体装置の一例であり、図２０に示すように、２５個の端子４３がｚ方向視格子状に配列されている。２５個の端子４３のうち、外側の１６個は半導体チップ２４，２５と接続され、内側の９個は半導体チップ２３と接続されている。本実施形態では、各端子４３はｚ方向視において正方形となっている。18 to 20 show a semiconductor device according to the fifth embodiment of the present invention. The semiconductor device A5 of this embodiment includes a sealingresin 1, threesemiconductor chips conductive connection members 33, fixingmembers terminals 43, and 16wires 53. It has. The semiconductor device A5 is an example of an area array type semiconductor device, and as shown in FIG. 20, 25terminals 43 are arranged in a lattice pattern in the z direction. Out of the 25terminals 43, the outer 16 are connected to the semiconductor chips 24 and 25, and the inner 9 are connected to thesemiconductor chip 23. In the present embodiment, each terminal 43 is square when viewed in the z direction.
封止樹脂１は、半導体チップ２３，２４、２５、各導電接続部材３３、固定部材３４、３５および各ワイヤ５３を完全に覆い、各端子４３の底面４３ａを露出させるように各端子４３を覆っている。封止樹脂１は、たとえばエポキシ樹脂からなり、ｚ方向視正方形状に形成されている。The sealingresin 1 completely covers the semiconductor chips 23, 24, 25, the respectiveconductive connection members 33, the fixingmembers respective wires 53, and covers therespective terminals 43 so as to expose the bottom surfaces 43 a of therespective terminals 43. ing. The sealingresin 1 is made of, for example, an epoxy resin and is formed in a square shape as viewed in the z direction.
半導体チップ２３は、Ｓｉなどの半導体材料からなり、内部には微細回路が作りこまれている。半導体チップ２３は、ｚ方向において互いに反対を向く底面２３ａおよび表面２３ｂを有しており、底面２３ａは表面２３ｂよりも図１９中下方に位置している。図１８に示す例では、半導体チップ２３はｚ方向視において正方形となっており、１６個の端子４３が成す矩形枠の内側に配置されている。半導体チップ２３の底面２３ａには、ｚ方向視において格子状に配列された９個の電極端子２３１が設けられている。各電極端子２３１は、半導体チップ２３内の微細回路に接続されている。なお、電極端子２３１の個数は半導体チップ２３の機能に応じて適宜変更され得るものである。Thesemiconductor chip 23 is made of a semiconductor material such as Si, and a fine circuit is formed inside. Thesemiconductor chip 23 has abottom surface 23a and asurface 23b that are opposite to each other in the z direction, and thebottom surface 23a is located below thesurface 23b in FIG. In the example illustrated in FIG. 18, thesemiconductor chip 23 has a square shape when viewed in the z direction, and is disposed inside a rectangular frame formed by 16terminals 43. On thebottom surface 23a of thesemiconductor chip 23, nineelectrode terminals 231 arranged in a lattice shape when viewed in the z direction are provided. Eachelectrode terminal 231 is connected to a fine circuit in thesemiconductor chip 23. The number ofelectrode terminals 231 can be changed as appropriate according to the function of thesemiconductor chip 23.
２５個の端子４３のうち内側の９個の端子４３は、ｚ方向視において半導体チップ２３と重なる位置に配置されている。より具体的には、９個の端子４３は、半導体チップ２３の底面２３ａに設けられた９個の電極端子２３１と対向するように配置されている。Among the 25terminals 43, the inner nineterminals 43 are arranged at positions overlapping thesemiconductor chip 23 when viewed in the z direction. More specifically, the nineterminals 43 are arranged to face the nineelectrode terminals 231 provided on thebottom surface 23 a of thesemiconductor chip 23.
各導電接続部材３３は、たとえばはんだバンプにより形成されており、図１９に示すように、各端子４３と各電極端子２３１とを接合している。Each conductive connectingmember 33 is formed by, for example, a solder bump, and joins each terminal 43 and eachelectrode terminal 231 as shown in FIG.
半導体チップ２４は、Ｓｉなどの半導体材料からなり、内部には微細回路が作りこまれている。半導体チップ２４は、ｚ方向において互いに反対を向く底面２４ａおよび表面２４ｂを有しており、底面２４ａは表面２４ｂよりも図１９中下方に位置している。図１８に示す例では、半導体チップ２４はｚ方向視において半導体チップ２３よりも小さな正方形となっている。半導体チップ２４の底面２４ａは固定部材３４を介して半導体チップ２３の表面２３ｂに固定されている。半導体チップ２４の表面２４ｂには８個の電極端子２４１が設けられている。８個の電極端子２４１は、半導体チップ２４のｚ方向視における中央部分を空けるように、表面２４ｂの周縁部に配列されている。図１８に示す例では、各電極端子２４１は表面２４ｂの各辺の両端および中央付近に配置されている。各電極端子２４１は、半導体チップ２４内の微細回路に接続されている。なお、電極端子２４１の個数は半導体チップ２４の機能に応じて適宜変更され得るものである。Thesemiconductor chip 24 is made of a semiconductor material such as Si, and a fine circuit is formed inside. Thesemiconductor chip 24 has abottom surface 24a and asurface 24b that are opposite to each other in the z direction, and thebottom surface 24a is located below thesurface 24b in FIG. In the example shown in FIG. 18, thesemiconductor chip 24 has a smaller square than thesemiconductor chip 23 in the z direction. Thebottom surface 24 a of thesemiconductor chip 24 is fixed to thesurface 23 b of thesemiconductor chip 23 via a fixingmember 34. Eightelectrode terminals 241 are provided on thesurface 24 b of thesemiconductor chip 24. The eightelectrode terminals 241 are arranged at the peripheral edge of thesurface 24b so as to leave a central portion when thesemiconductor chip 24 is viewed in the z direction. In the example shown in FIG. 18, eachelectrode terminal 241 is arranged near both ends and the center of each side of thesurface 24b. Eachelectrode terminal 241 is connected to a fine circuit in thesemiconductor chip 24. The number ofelectrode terminals 241 can be changed as appropriate according to the function of thesemiconductor chip 24.
半導体チップ２５は、Ｓｉなどの半導体材料からなり、内部には微細回路が作りこまれている。半導体チップ２５は、ｚ方向において互いに反対を向く底面２５ａおよび表面２５ｂを有しており、底面２５ａは表面２５ｂよりも図１９中下方に位置している。図１８に示す例では、半導体チップ２５はｚ方向視において半導体チップ２４よりも小さな正方形となっている。半導体チップ２５の底面２５ａは固定部材３５を介して半導体チップ２４の表面２４ｂに固定されている。半導体チップ２５の表面２５ｂには８個の電極端子２５１が設けられている。図１８に示す例では、８個の電極端子２５１は、ｘ方向視あるいはｙ方向視において、８個の電極端子２４１と重ならない位置に配置されている。各電極端子２５１は、半導体チップ２５内の微細回路に接続されている。なお、電極端子２５１の個数は半導体チップ２５の機能に応じて適宜変更され得るものである。Thesemiconductor chip 25 is made of a semiconductor material such as Si, and a fine circuit is formed inside. Thesemiconductor chip 25 has abottom surface 25a and asurface 25b that are opposite to each other in the z direction, and thebottom surface 25a is located below thesurface 25b in FIG. In the example shown in FIG. 18, thesemiconductor chip 25 is a square smaller than thesemiconductor chip 24 when viewed in the z direction. Thebottom surface 25 a of thesemiconductor chip 25 is fixed to thesurface 24 b of thesemiconductor chip 24 through a fixingmember 35. Eightelectrode terminals 251 are provided on thesurface 25 b of thesemiconductor chip 25. In the example illustrated in FIG. 18, the eightelectrode terminals 251 are arranged at positions that do not overlap the eightelectrode terminals 241 when viewed in the x direction or the y direction. Eachelectrode terminal 251 is connected to a fine circuit in thesemiconductor chip 25. The number ofelectrode terminals 251 can be changed as appropriate according to the function of thesemiconductor chip 25.
固定部材３４，３５は、たとえば、ＤＡＦテープである。図１８に示すように、固定部材３４はｚ方向視略矩形状であり、半導体チップ２３の表面２３ｂの大部分を覆っている。前述のように、半導体チップ２３の電極端子２３１は底面２３ａに設けられている。このため、固定部材３４の大きさを半導体チップ２３とほぼ同程度の大きさにすることも可能である。このことは、比較的大きなサイズの半導体チップ２４を半導体チップ２３上に設置する際に有利に作用する。固定部材３５は、８個の電極端子２４１が作る枠の内側に設置されている。The fixingmembers member 34 is substantially rectangular when viewed in the z direction, and covers most of thesurface 23 b of thesemiconductor chip 23. As described above, theelectrode terminal 231 of thesemiconductor chip 23 is provided on thebottom surface 23a. For this reason, it is possible to make the size of the fixingmember 34 substantially the same as that of thesemiconductor chip 23. This is advantageous when a relatively largesize semiconductor chip 24 is installed on thesemiconductor chip 23. The fixingmember 35 is installed inside a frame formed by the eightelectrode terminals 241.
図１８に示すように、各電極端子２４１，２５１は金製のワイヤ５３によって各端子４３と接続されている。As shown in FIG. 18, eachelectrode terminal gold wire 53.
次に、半導体装置Ａ５の製造方法の一例について、図２１～図２６を参照しつつ以下に説明する。Next, an example of a method for manufacturing the semiconductor device A5 will be described below with reference to FIGS.
半導体装置Ａ５を製造する際にも、半導体装置Ａ１～Ａ４の場合と同様に基台６を用いる。When manufacturing the semiconductor device A5, thebase 6 is used as in the case of the semiconductor devices A1 to A4.
半導体装置Ａ５を製造する際には、まず基台６を用意し、基台６の表面に端子４３を形成する工程を行う。図２１には、端子４３が形成された状態を示している。この工程は、半導体装置Ａ１の端子４を形成する場合と同様に無電解メッキ処理によって行われる。When manufacturing the semiconductor device A5, first, thebase 6 is prepared, and the process of forming theterminals 43 on the surface of thebase 6 is performed. FIG. 21 shows a state in which the terminal 43 is formed. This step is performed by electroless plating as in the case of forming theterminal 4 of the semiconductor device A1.
次に、半導体チップ２３を基台６に設置する工程を行う。図２２および図２３には基台６に半導体チップ２３を設置した状態を示している。この工程は、常用されているはんだバンプ形成方法を用いて行うことができる。この方法では、中央の９つの端子４３にはんだバンプを形成して電極端子２３１と位置あわせを行う。導電接続部材３３はこの際に形成されるはんだバンプである。Next, a process of installing thesemiconductor chip 23 on thebase 6 is performed. 22 and 23 show a state where thesemiconductor chip 23 is installed on thebase 6. This step can be performed using a commonly used solder bump forming method. In this method, solder bumps are formed on the nineterminals 43 at the center to align with theelectrode terminals 231. Theconductive connection member 33 is a solder bump formed at this time.
次に、半導体チップ２４を半導体チップ２３に設置する工程を行う。図２４には半導体チップ２３に半導体チップ２４を設置した状態を示している。この工程では、まず、半導体チップ２４の底面２４ａにＤＡＦテープを貼り付ける工程を行う。次に、図２４に示すように、半導体チップ２３の表面２３ｂに半導体チップ２５を設置する。上記ＤＡＦテープが固定部材３４となる。Next, a process of installing thesemiconductor chip 24 on thesemiconductor chip 23 is performed. FIG. 24 shows a state where thesemiconductor chip 24 is installed on thesemiconductor chip 23. In this step, first, a step of attaching a DAF tape to thebottom surface 24a of thesemiconductor chip 24 is performed. Next, as shown in FIG. 24, thesemiconductor chip 25 is installed on thesurface 23 b of thesemiconductor chip 23. The DAF tape is the fixingmember 34.
次に、半導体チップ２５を半導体チップ２４に設置する工程を行う。図２５には半導体チップ２４に半導体チップ２５を設置した状態を示している。この工程では、まず、半導体チップ２５の底面２５ａにＤＡＦテープを貼り付ける工程を行う。次に、図２５に示すように、半導体チップ２４の表面２４ｂに半導体チップ２４を設置する。上記ＤＡＦテープが固定部材３５となる。Next, a process of installing thesemiconductor chip 25 on thesemiconductor chip 24 is performed. FIG. 25 shows a state where thesemiconductor chip 25 is installed on thesemiconductor chip 24. In this step, first, a step of attaching a DAF tape to thebottom surface 25a of thesemiconductor chip 25 is performed. Next, as shown in FIG. 25, thesemiconductor chip 24 is placed on thesurface 24 b of thesemiconductor chip 24. The DAF tape serves as the fixingmember 35.
次に、各半導体チップ２４，２５と複数の端子４３とをワイヤ５３で接続する工程を行う。図２６にはワイヤ５３を接続した後の状態を示している。この工程では、各電極端子２４１，２５１と、半導体チップ２３を囲むように配置された各端子４３との間をワイヤ５３で接続する。この工程は、たとえば市販されているワイヤボンディング用キャピラリを用いて行うことができる。Next, a process of connecting the semiconductor chips 24 and 25 and the plurality ofterminals 43 with thewires 53 is performed. FIG. 26 shows a state after thewire 53 is connected. In this step, theelectrode terminals terminals 43 arranged so as to surround thesemiconductor chip 23 are connected bywires 53. This step can be performed, for example, using a commercially available wire bonding capillary.
次に、封止樹脂１を形成する工程を行う。この工程は、半導体装置Ａ１の製造方法で説明した方法と同様にたとえばトランスファモールド法により行うことができる。Next, a step of forming the sealingresin 1 is performed. This step can be performed by, for example, a transfer mold method, similarly to the method described in the method for manufacturing the semiconductor device A1.
次に、基台６を除去する工程を行う。この工程は、半導体装置Ａ１の製造方法で説明した方法と同様に基台６を底面側からエッチングすることにより行われる。基台６を除去した後に封止樹脂１を切断することにより、図１８に示す半導体装置Ａ５を得ることができる。Next, a process of removing thebase 6 is performed. This step is performed by etching thebase 6 from the bottom side as in the method described in the method for manufacturing the semiconductor device A1. The semiconductor device A5 shown in FIG. 18 can be obtained by cutting the sealingresin 1 after removing thebase 6.
次に、半導体装置Ａ５およびその製造方法の作用について説明する。Next, the operation of the semiconductor device A5 and its manufacturing method will be described.
半導体装置Ａ５は、各種電子機器の回路基板に組み込まれて使用される。回路基板の小型化を図るには、同一面積内により多くの半導体チップを組み込むことが有効である。半導体装置Ａ５は、ｚ方向に積層された３個の半導体チップ２３，２４，２５を内蔵している。このような構成によれば、３つの半導体チップ２３，２４，２５を別々に樹脂封止して電子回路に組み込んだ場合に比べて、単位面積あたりの半導体チップの個数を増やすことが可能である。従って、半導体装置Ａ５は、回路基板の小型化を図る上で有益な構成を備えている。The semiconductor device A5 is used by being incorporated in circuit boards of various electronic devices. In order to reduce the size of the circuit board, it is effective to incorporate more semiconductor chips in the same area. The semiconductor device A5 includes threesemiconductor chips semiconductor chips
さらに、半導体装置Ａ５では、一部の端子４３がｚ方向視において半導体チップ２３と重なる位置に配置されている。このことは半導体装置Ａ５のｚ方向視サイズを小さくする上で有利な構成である。Furthermore, in the semiconductor device A5, some of theterminals 43 are arranged at positions where they overlap with thesemiconductor chip 23 when viewed in the z direction. This is an advantageous configuration for reducing the size of the semiconductor device A5 when viewed in the z direction.
またさらに、半導体装置Ａ５では、ｚ方向視において半導体チップ２３と重なる位置に配置された９個の端子４３は、導電接続部材３３によって半導体チップ２３の底面２３ａに設けられた電極端子２３１と接合されている。これら９個の端子４３は、封止樹脂１から脱落しにくくなっている。Furthermore, in the semiconductor device A5, the nineterminals 43 arranged at positions overlapping thesemiconductor chip 23 when viewed in the z direction are joined to theelectrode terminals 231 provided on thebottom surface 23a of thesemiconductor chip 23 by theconductive connection member 33. ing. These nineterminals 43 are difficult to drop off from the sealingresin 1.
図２７および図２８は、本発明の第６実施形態に基づく半導体装置を示している。本実施形態の半導体装置Ａ６は、一部の端子４３には、たとえば半導体装置Ａ１～Ａ３で説明したような開口部４０１が形成されており、その他の構成は半導体装置Ａ５と同様となっている。27 and 28 show a semiconductor device according to the sixth embodiment of the present invention. In the semiconductor device A6 of the present embodiment, for example, theopenings 401 as described in the semiconductor devices A1 to A3 are formed in some of theterminals 43, and the other configurations are the same as those of the semiconductor device A5. .
図２７に示すように、半導体チップ２３を囲むように配置され、ワイヤ５３に接続された１６個の端子４３に開口部４０１が設けられている。開口部４０１を設けることにより、これらの端子４３は封止樹脂１から脱落しにくくなる。27,openings 401 are provided in 16terminals 43 arranged so as to surround thesemiconductor chip 23 and connected to thewires 53. By providing theopening 401, theseterminals 43 are less likely to drop off from the sealingresin 1.
なお、図２８に示すように、ｚ方向視において半導体チップ２３と重なる位置に配置された９個の端子４３には開口部４０１が設けられていない。これら９個の端子４３は、導電接続部材３３を介して半導体チップ２３の底面２３ａに接合されているため開口部４０１を設ける必要がない。As shown in FIG. 28, the nineterminals 43 arranged at positions overlapping thesemiconductor chip 23 when viewed in the z direction are not provided withopenings 401. Since these nineterminals 43 are joined to thebottom surface 23a of thesemiconductor chip 23 via theconductive connection member 33, it is not necessary to provide theopening 401.
本発明に係る半導体装置の製造方法および半導体装置は、上述した実施形態に限定されるものではない。本発明に係る半導体装置の製造方法および半導体装置の具体的な構成は、種々に設計変更自在である。The semiconductor device manufacturing method and the semiconductor device according to the present invention are not limited to the above-described embodiments. Various changes can be made to the design of the semiconductor device manufacturing method and the specific configuration of the semiconductor device according to the present invention.
たとえば、半導体装置Ａ４は２つの半導体チップ２１，２２を内蔵しているが、半導体チップ２２の表面にＤＡＦテープを用いてさらにもう一つ半導体チップを積層設置しても構わない。For example, although the semiconductor device A4 includes twosemiconductor chips semiconductor chip 22 using a DAF tape.
また、半導体装置Ａ５は３つの半導体チップ２３，２４，２５を内蔵しているが、半導体チップ２５を設けずに２つの半導体チップ２３，２４を内蔵する構成としても構わない。Further, although the semiconductor device A5 includes the threesemiconductor chips semiconductor chips semiconductor chip 25.
Ａ１～Ａ６ 半導体装置
１ 封止樹脂
２，２１，２２，２３，２４，２５ 半導体チップ
２０１，２１１，２２１，２３１，２４１，２５１ 電極端子
３，３１ 支持部材
３２，３４，３５ 固定部材
３３ 導電接続部材
４，４１，４２，４３ 端子
４０１ 開口部
４０２ パッド部
５，５１，５２，５３ ワイヤ
６ 基台A1 toA6 Semiconductor device 1Sealing resin Semiconductor chip Electrode terminal Support member member 33Conductive connection Member Terminal 401Opening 402Pad part Wire 6 Base
１ 封止樹脂
２，２１，２２，２３，２４，２５ 半導体チップ
２０１，２１１，２２１，２３１，２４１，２５１ 電極端子
３，３１ 支持部材
３２，３４，３５ 固定部材
３３ 導電接続部材
４，４１，４２，４３ 端子
４０１ 開口部
４０２ パッド部
５，５１，５２，５３ ワイヤ
６ 基台A1 to
Claims (41)
- 半導体チップと、
上記半導体チップに接続された端子と、
上記半導体チップおよび上記端子を覆う封止樹脂と、
を備えた半導体装置であって、
上記封止樹脂は、上記端子の厚み方向における一方の面を露出させるように形成されており、
上記端子には、上記封止樹脂が充填される開口部が形成されていることを特徴とする、半導体装置。A semiconductor chip;
A terminal connected to the semiconductor chip;
Sealing resin covering the semiconductor chip and the terminal;
A semiconductor device comprising:
The sealing resin is formed so as to expose one surface in the thickness direction of the terminal,
The semiconductor device according to claim 1, wherein the terminal is formed with an opening filled with the sealing resin. - 上記開口部は、上記厚み方向に上記端子を貫通する孔状に形成されている、請求項１に記載の半導体装置。2. The semiconductor device according to claim 1, wherein the opening is formed in a hole shape penetrating the terminal in the thickness direction.
- 上記開口部は、上記厚み方向視において、上記厚み方向と直交する方向に凹む形状である、請求項１に記載の半導体装置。2. The semiconductor device according to claim 1, wherein the opening is shaped to be recessed in a direction orthogonal to the thickness direction when viewed in the thickness direction.
- 上記半導体チップと上記端子とを接続するワイヤを備えており、
上記端子は上記ワイヤが接続されるパッド部を有しており、
上記パッド部は、上記開口部よりも上記厚み方向と直交する方向において上記半導体チップから遠い位置に配置される、請求項１ないし３のいずれかに記載の半導体装置。A wire for connecting the semiconductor chip and the terminal;
The terminal has a pad portion to which the wire is connected,
4. The semiconductor device according to claim 1, wherein the pad portion is disposed farther from the semiconductor chip in a direction perpendicular to the thickness direction than the opening. - 上記端子は、上記厚み方向と直交する第１の方向に長く延び、上記第１の方向において上記半導体チップから遠ざかるにつれて、上記厚み方向および上記第１の方向と直交する第２の方向における幅が狭くなるように形成されている、請求項４に記載の半導体装置。The terminal extends long in a first direction orthogonal to the thickness direction, and the width in the second direction orthogonal to the thickness direction and the first direction increases as the distance from the semiconductor chip in the first direction increases. The semiconductor device according to claim 4, wherein the semiconductor device is formed to be narrow.
- 上記半導体チップの上記厚み方向における一方の面を支持する支持部材を備えており、
上記支持部材の上記厚み方向における一方の面が上記封止樹脂から露出している、請求項１ないし５のいずれかに記載の半導体装置。A support member for supporting one surface of the semiconductor chip in the thickness direction;
The semiconductor device according to claim 1, wherein one surface of the support member in the thickness direction is exposed from the sealing resin. - 上記支持部材は銀を含む、請求項６に記載の半導体装置。The semiconductor device according to claim 6, wherein the support member includes silver.
- 上記端子は、複数の金属層からなる、請求項１ないし７のいずれかに記載の半導体装置。8. The semiconductor device according to claim 1, wherein the terminal is made of a plurality of metal layers.
- 基台に端子を形成する工程と、
上記基台に半導体チップを設置する工程と、
上記端子および上記半導体チップを樹脂で封止する工程と、
上記基台を除去する工程と、
を備えた半導体装置の製造方法であって、
上記端子を形成する工程は、上記端子に上記基台の厚み方向視において上記基台を露出させる開口部を形成する工程を含んでいることを特徴とする、半導体装置の製造方法。Forming a terminal on the base;
Installing a semiconductor chip on the base;
Sealing the terminal and the semiconductor chip with a resin;
Removing the base;
A method for manufacturing a semiconductor device comprising:
The step of forming the terminal includes a step of forming an opening in the terminal to expose the base in the thickness direction of the base. - 上記基台に端子を形成する工程は、上記基台に無電解メッキ処理を施す工程を含んでいる、請求項９に記載の半導体装置の製造方法。10. The method of manufacturing a semiconductor device according to claim 9, wherein the step of forming a terminal on the base includes a step of subjecting the base to electroless plating.
- 複数の端子と、
第１の半導体チップと、
上記第１の半導体チップに設置される第２の半導体チップと、
上記第１の半導体チップ、上記第２の半導体チップ、および上記複数の端子を覆う封止樹脂と、
を備えており、
上記複数の端子は、上記第１の半導体チップと接続された第１の端子と、上記第２の半導体チップと接続された第２の端子とを含んでおり、
上記複数の端子の厚み方向における一方の面は上記封止樹脂から露出していることを特徴とする、半導体装置。Multiple terminals,
A first semiconductor chip;
A second semiconductor chip installed on the first semiconductor chip;
Sealing resin covering the first semiconductor chip, the second semiconductor chip, and the plurality of terminals;
With
The plurality of terminals include a first terminal connected to the first semiconductor chip and a second terminal connected to the second semiconductor chip,
One surface of the plurality of terminals in the thickness direction is exposed from the sealing resin. - 上記第１の半導体チップの上記厚み方向における一方の面を支持する支持部材を備えており、
上記支持部材の上記厚み方向における一方の面は上記封止樹脂から露出している、請求項１１に記載の半導体装置。A support member for supporting one surface of the first semiconductor chip in the thickness direction;
The semiconductor device according to claim 11, wherein one surface of the support member in the thickness direction is exposed from the sealing resin. - 上記支持部材は銀を含む、請求項１２に記載の半導体装置。The semiconductor device according to claim 12, wherein the support member includes silver.
- 上記第１の半導体チップは、上記厚み方向における他方の面に第１の電極端子を有しており、
上記第１の電極端子と上記第１の端子とを接続する第１のワイヤを備えている、請求項１２または１３に記載の半導体装置。The first semiconductor chip has a first electrode terminal on the other surface in the thickness direction,
The semiconductor device according to claim 12, further comprising a first wire that connects the first electrode terminal and the first terminal. - 上記第１の端子には上記封止樹脂が充填される開口部が形成されている、請求項１１ないし１４のいずれかに記載の半導体装置。15. The semiconductor device according to claim 11, wherein an opening filled with the sealing resin is formed in the first terminal.
- 上記第１の端子は、上記厚み方向視において上記第１の半導体チップと重なる位置に配置されており、
上記第１の半導体チップは、上記厚み方向における一方の面に第１の電極端子を有しており、
上記第１の電極端子と上記第１の端子とを接続する導電接続部材を備えている、請求項１１に記載の半導体装置。The first terminal is disposed at a position overlapping the first semiconductor chip in the thickness direction view,
The first semiconductor chip has a first electrode terminal on one surface in the thickness direction,
The semiconductor device according to claim 11, further comprising a conductive connection member that connects the first electrode terminal and the first terminal. - 上記第２の半導体チップの上記厚み方向における一方の面は、上記第１の半導体チップに固定されており、
上記第２の半導体チップは、上記厚み方向における他方の面に第２の電極端子を備えており、
上記第２の電極端子と上記第２の端子とを接続する第２のワイヤを備えている、請求項１１ないし１６のいずれか記載の半導体装置。One surface in the thickness direction of the second semiconductor chip is fixed to the first semiconductor chip,
The second semiconductor chip includes a second electrode terminal on the other surface in the thickness direction,
The semiconductor device according to claim 11, further comprising a second wire that connects the second electrode terminal and the second terminal. - 上記第２の半導体チップと、上記第１の半導体チップとを接合する固定部材を備えている、請求項１１ないし１７のいずれかに記載の半導体装置。18. The semiconductor device according to claim 11, further comprising a fixing member that joins the second semiconductor chip and the first semiconductor chip.
- 上記第２の端子には、上記封止樹脂が充填される開口部が形成されている、請求項１７または１８に記載の半導体装置。The semiconductor device according to claim 17 or 18, wherein the second terminal is formed with an opening filled with the sealing resin.
- 上記各端子は、複数の金属層からなる、請求項１１ないし１９のいずれかに記載の半導体装置。20. The semiconductor device according to claim 11, wherein each of the terminals includes a plurality of metal layers.
- 基台に複数の端子を形成する工程と、
上記基台に第１の半導体チップを設置する工程と、
上記第１の半導体チップに第２の半導体チップを設置する工程と、
上記第１の半導体チップ、上記第２の半導体チップおよび上記複数の端子を樹脂で封止する工程と、
上記基台を除去する工程と、
を備えていることを特徴とする、半導体装置の製造方法。Forming a plurality of terminals on the base;
Installing a first semiconductor chip on the base;
Installing a second semiconductor chip on the first semiconductor chip;
Sealing the first semiconductor chip, the second semiconductor chip and the plurality of terminals with a resin;
Removing the base;
A method for manufacturing a semiconductor device, comprising: - 上記基台に複数の端子を形成する工程は、上記基台に無電解メッキ処理を施す工程を含んでいる、請求項２１に記載の半導体装置の製造方法。The method for manufacturing a semiconductor device according to claim 21, wherein the step of forming a plurality of terminals on the base includes a step of performing electroless plating on the base.
- 上記第１の半導体チップは、上記複数の端子の厚み方向において上記基台から遠い方の面に第１の電極端子を有しており、
上記基台に上記第１の半導体チップを設置する工程は、上記第１の半導体チップの上記厚み方向における上記基台に近い方の面を、接着部材を介して上記基台に接着する工程と、上記第１の電極端子と、上記複数の端子のいずれかとを第１のワイヤで接続する工程とを含んでいる、請求項２１または２２に記載の半導体装置の製造方法。The first semiconductor chip has a first electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals,
The step of installing the first semiconductor chip on the base includes the step of adhering the surface of the first semiconductor chip closer to the base in the thickness direction to the base via an adhesive member. The method for manufacturing a semiconductor device according to claim 21, further comprising a step of connecting the first electrode terminal and any of the plurality of terminals with a first wire. - 上記基台に上記複数の端子を形成する工程は、上記複数の端子に上記基台の厚み方向視において上記基台を露出させる開口部を形成する工程を含んでいる、請求項２１ないし２３のいずれかに記載の半導体装置の製造方法。24. The step of forming the plurality of terminals on the base includes a step of forming an opening that exposes the base in the thickness direction of the base in the plurality of terminals. The manufacturing method of the semiconductor device in any one.
- 上記第１の半導体チップは、上記複数の端子の厚み方向において上記基台に近い方の面に第１の電極端子を有しており、
上記基台に第１の半導体チップを設置する工程は、上記第１の電極端子と上記複数の端子のいずれかを導電接続部材で接続する工程を含んでいる、請求項２１または２２に記載の半導体装置の製造方法。The first semiconductor chip has a first electrode terminal on a surface closer to the base in the thickness direction of the plurality of terminals.
The step of installing the first semiconductor chip on the base includes the step of connecting any one of the first electrode terminal and the plurality of terminals with a conductive connection member. A method for manufacturing a semiconductor device. - 上記第２の半導体チップは、上記複数の端子の厚み方向において上記基台から遠い方の面に第２の電極端子を有しており、
上記第２の電極端子と上記複数の端子のいずれかとを第２のワイヤで接続する工程を備えている、請求項２１ないし２５のいずれかに記載の半導体装置の製造方法。The second semiconductor chip has a second electrode terminal on a surface far from the base in the thickness direction of the plurality of terminals,
26. The method of manufacturing a semiconductor device according to claim 21, further comprising a step of connecting the second electrode terminal and any of the plurality of terminals with a second wire. - 複数の端子と、
第１の半導体チップと、
上記第１の半導体チップに設置される第２の半導体チップと、
上記第２の半導体チップに設置される第３の半導体チップと、
上記第１の半導体チップ、上記第２の半導体チップ、上記第３の半導体チップ、および上記複数の端子を覆う封止樹脂と、
を備えており、
上記複数の端子は、上記第１の半導体チップと接続された第１の端子と、上記第２の半導体チップと接続された第２の端子と、上記第３の半導体チップと接続された第３の端子とを含んでおり、
上記複数の端子の厚み方向における一方の面は上記封止樹脂から露出していることを特徴とする、半導体装置。Multiple terminals,
A first semiconductor chip;
A second semiconductor chip installed on the first semiconductor chip;
A third semiconductor chip installed on the second semiconductor chip;
A sealing resin covering the first semiconductor chip, the second semiconductor chip, the third semiconductor chip, and the plurality of terminals;
With
The plurality of terminals include a first terminal connected to the first semiconductor chip, a second terminal connected to the second semiconductor chip, and a third terminal connected to the third semiconductor chip. Terminal and
One surface of the plurality of terminals in the thickness direction is exposed from the sealing resin. - 上記第１の端子は、上記厚み方向視において上記第１の半導体チップと重なる位置に配置されており、
上記第１の半導体チップは、上記厚み方向における一方の面に第１の電極端子を有しており、
上記第１の電極端子と上記第１の端子とを接続する導電接続部材を備えている、請求項２７に記載の半導体装置。The first terminal is disposed at a position overlapping the first semiconductor chip in the thickness direction view,
The first semiconductor chip has a first electrode terminal on one surface in the thickness direction,
28. The semiconductor device according to claim 27, further comprising a conductive connection member that connects the first electrode terminal and the first terminal. - 上記第１の半導体チップの上記厚み方向における一方の面を支持する支持部材を備えており、
上記支持部材の上記厚み方向における一方の面は上記封止樹脂から露出している、請求項２７に記載の半導体装置。A support member for supporting one surface of the first semiconductor chip in the thickness direction;
28. The semiconductor device according to claim 27, wherein one surface of the support member in the thickness direction is exposed from the sealing resin. - 上記支持部材は銀を含む、請求項２９に記載の半導体装置。30. The semiconductor device according to claim 29, wherein the support member includes silver.
- 上記第１の半導体チップは、上記厚み方向における他方の面に第１の電極端子を有しており、
上記第１の電極端子と上記第１の端子とを接続する第１のワイヤを備えている、請求項２９または３０に記載の半導体装置。The first semiconductor chip has a first electrode terminal on the other surface in the thickness direction,
31. The semiconductor device according to claim 29 or 30, further comprising a first wire that connects the first electrode terminal and the first terminal. - 上記第１の端子には、上記封止樹脂が充填される開口部が形成されている、請求項２７ないし３１のいずれかに記載の半導体装置。32. The semiconductor device according to claim 27, wherein the first terminal has an opening filled with the sealing resin.
- 上記第２の半導体チップの上記厚み方向における一方の面は、上記第１の半導体チップに固定されており、
上記第２の半導体チップは、上記厚み方向における他方の面に第２の電極端子を備えており、
上記第２の電極端子と上記第２の端子とを接続する第２のワイヤを備えている、請求項２７ないし３２のいずれかに記載の半導体装置。One surface in the thickness direction of the second semiconductor chip is fixed to the first semiconductor chip,
The second semiconductor chip includes a second electrode terminal on the other surface in the thickness direction,
33. The semiconductor device according to claim 27, further comprising a second wire that connects the second electrode terminal and the second terminal. - 上記第２の半導体チップと、上記第１の半導体チップとを接合する第１の固定部材を備えている、請求項２７ないし３３のいずれかに記載の半導体装置。34. The semiconductor device according to claim 27, further comprising a first fixing member that joins the second semiconductor chip and the first semiconductor chip.
- 上記第２の端子には、上記封止樹脂が充填される開口部が形成されている、請求項３３または３４に記載の半導体装置。35. The semiconductor device according to claim 33, wherein the second terminal is formed with an opening filled with the sealing resin.
- 上記第３の半導体チップの上記厚み方向における一方の面は、上記第２の半導体チップに固定されており、
上記第３の半導体チップは、上記厚み方向における他方の面に第３の電極端子を備えており、
上記第３の電極端子と上記第３の端子とを接続する第３のワイヤを備えている、請求項２７ないし３５に記載の半導体装置。One surface of the third semiconductor chip in the thickness direction is fixed to the second semiconductor chip,
The third semiconductor chip includes a third electrode terminal on the other surface in the thickness direction,
36. The semiconductor device according to claim 27, further comprising a third wire for connecting the third electrode terminal and the third terminal. - 上記第３の半導体チップと、上記第２の半導体チップとを接合する第２の固定部材を備えている、請求項２７ないし３６のいずれかに記載の半導体装置。37. The semiconductor device according to claim 27, further comprising a second fixing member that joins the third semiconductor chip and the second semiconductor chip.
- 上記第３の端子には、上記封止樹脂が充填される開口部が形成されている、請求項３６または３７に記載の半導体装置。38. The semiconductor device according to claim 36 or 37, wherein the third terminal is formed with an opening filled with the sealing resin.
- 上記各端子は、複数の金属層からなる、請求項２７ないし３８のいずれかに記載の半導体装置。39. The semiconductor device according to claim 27, wherein each of the terminals includes a plurality of metal layers.
- 基台に複数の端子を形成する工程と、
上記基台に第１の半導体チップを設置する工程と、
上記第１の半導体チップに第２の半導体チップを設置する工程と、
上記第２の半導体チップに第３の半導体チップを設置する工程と、
上記第１の半導体チップ、上記第２の半導体チップ、上記第３の半導体チップ、および複数の端子を樹脂で封止する工程と、
上記基台を除去する工程と、
を備えていることを特徴とする、半導体装置の製造方法。Forming a plurality of terminals on the base;
Installing a first semiconductor chip on the base;
Installing a second semiconductor chip on the first semiconductor chip;
Installing a third semiconductor chip on the second semiconductor chip;
Sealing the first semiconductor chip, the second semiconductor chip, the third semiconductor chip, and the plurality of terminals with a resin;
Removing the base;
A method for manufacturing a semiconductor device, comprising: - 上記基台に複数の端子を形成する工程は、上記基台に無電解メッキ処理を施す工程を含んでいる、請求項４０に記載の半導体装置の製造方法。41. The method of manufacturing a semiconductor device according to claim 40, wherein the step of forming a plurality of terminals on the base includes a step of performing electroless plating on the base.
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